A ball thrown vertically upwards from a point P on earth reaches a point Q and returns back to earth striking at a point R.

A ball thrown vertically upwards from a point P on earth reaches a point Q and returns back to earth striking at a point R.
by

1 Answer

Answer :

A ball thrown vertically upwards from a point P on earth reaches a point Q and returns back to ... the motion of the ball (Neglect air resistance).
by
selected by

Related questions

A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be a.1 sec b.4 sec c.2 sec d.5 sec e.3 sec

Description : A ball weighing 250 gm is thrown vertically upwards with a velocity of 980 cm/sec. The time that the ball will take to return back to earth would be a.1 sec b.4 sec c.2 sec d.5 sec e.3 sec

Last Answer : c. 2 sec

A stone is thrown vertically upwards from the ground with a velocity 15 m/s. At the same instant a ball is dropped from a point directly

Description : A stone is thrown vertically upwards from the ground with a velocity 15 m/s. At the same instant a ball is dropped from a point directly

Last Answer : A stone is thrown vertically upwards from the ground with a velocity 15 m/s. At the same instant a ball ... Use g = 10 m/s2 for ease of calculation).

A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, what is the magnitude and direction of the acceleration of the ball?

Description : A ball is thrown vertically upwards from the ground with a speed of 80 feet/second. In the English system of units, what is the magnitude and direction of the acceleration of the ball? 

Last Answer : ANSWER: 32 FEET PER SECOND SQUARED DOWN or TOWARDS THE EARTH  

AB and CD are two smooth parallel walls. A child rolls a ball along ground from A towards point P find PD so that ball reaches point B after striking

Description : AB and CD are two smooth parallel walls. A child rolls a ball along ground from A towards point P find PD so that ball reaches point B after striking

Last Answer : AB and CD are two smooth parallel walls. A child rolls a ball along ground from A towards point P find PD so that ball ... B. 0.5 m C. 1.2 m D. 0.6 m

A stone of wight 100 kg is thrown vertically upwards by a man of height y = 1.8 m with an initial velocity of 20 m/sec. The maximum height to which it will rise would be a.22.2 m b.26 m c.15.1 m d.20.2 m e.10 m

Description : A stone of wight 100 kg is thrown vertically upwards by a man of height y = 1.8 m with an initial velocity of 20 m/sec. The maximum height to which it will rise would be a.22.2 m b.26 m c.15.1 m d.20.2 m e.10 m

Last Answer : a. 22.2 m

A particle is thrown vertically upward. When it reaches the highest point, it has – (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Description : A particle is thrown vertically upward. When it reaches the highest point, it has – (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Last Answer : (1) a downward acceleration Explanation: When a particle is thrown vertically upwards in space, it will experience constant acceleration towards the ground (irrespective of the direction in which it ... point, it has zero velocity but has downward acceleration equal to acceleration due to gravity.

A particle is thrown vertically upward. When it reaches the highest point, it has (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Description : A particle is thrown vertically upward. When it reaches the highest point, it has (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Last Answer : a downward acceleration

A ball is thrown upwards and it goes to the height 100 m and comes down 1) What is the net displacement? 2) What is the net distance? Answer -Science

Description : A ball is thrown upwards and it goes to the height 100 m and comes down 1) What is the net displacement? 2) What is the net distance? Answer -Science

Last Answer : As it comes down to the initial point Net displacement is zero Net distance=200 m

A ball is thrown upwards with an initial velocity of 5 meters per second. How many seconds will it take to reach maximum height? w) 0.5 seconds x) 1 second y) 1.5 seconds z) 2 seconds

Description : A ball is thrown upwards with an initial velocity of 5 meters per second. How many seconds will it take to reach maximum height? w) 0.5 seconds x) 1 second y) 1.5 seconds z) 2 seconds

Last Answer : ANSWER: W -- 0.5 SECONDS

A ball thrown by one player reaches the other in 2 seconds. The maximum height attained by the ball above the point of projection will be :- `(g = 10

Description : A ball thrown by one player reaches the other in 2 seconds. The maximum height attained by the ball above the point of projection will be :- `(g = 10

Last Answer : A ball thrown by one player reaches the other in 2 seconds. The maximum height attained by the ball above the point of ... B. 7.5 m C. 5 m D. 2.5 m

The velocity of a ball tossed vertically into the air is expressed by the equation v(t) = -32t + 4, where t is given in seconds. Give the velocity of the ball when it reaches its highest point.

Description : The velocity of a ball tossed vertically into the air is expressed by the equation v(t) = -32t + 4, where t is given in seconds. Give the velocity of the ball when it reaches its highest point. 

Last Answer : ANSWER: 0

A person walks from point P to point Q along a straight road ¡n 10 minutes, then turns back and returns to point R which is midway

Description : A person walks from point P to point Q along a straight road ¡n 10 minutes, then turns back and returns to point R which is midway

Last Answer : A person walks from point P to point Q along a straight road n 10 minutes, then turns back and ... velocity of the person in going from P to R.

A ball is thrown upward with such a velocity v that it returns to the thrower after 3 s. Take g = 10 `ms^(-2)`. Find the value of v :-

Description : A ball is thrown upward with such a velocity v that it returns to the thrower after 3 s. Take g = 10 `ms^(-2)`. Find the value of v :-

Last Answer : A ball is thrown upward with such a velocity v that it returns to the thrower after 3 s. Take g = 10 `ms^(-2)`. ... /s B. 20 m/s C. 10 m/s D. 5 m/s

A stone is thrown upwards with initial velocity of 20 m s-1, the height that stone will reach would be A. 20 m B. 30 m C. 40 m D. 50 m

Description : A stone is thrown upwards with initial velocity of 20 m s-1, the height that stone will reach would be A. 20 m B. 30 m C. 40 m D. 50 m

Last Answer : 20 m

A bullet is fired vertically upwards with a velocity of 2200 ft/s. Bullet ascends to a height of a.56,900 ft b.107 dynes c.75,000 ft d.48.300 ft e.65,800 ft

Description : A bullet is fired vertically upwards with a velocity of 2200 ft/s. Bullet ascends to a height of a.56,900 ft b.107 dynes c.75,000 ft d.48.300 ft e.65,800 ft

Last Answer : c. 75,000 ft

A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground. (1) 1 : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Last Answer : (1) 1 : 1 Explanation: The stone which is throws upward will have the same velocity of u at the point of its original position when it is falling down. Another stone is thrown downwards with u. So ... will hit the ground with same velocity. So the ratio between the speeds of two stones will be 1:1

In a solid arch, shear force acts (A) Vertically upwards (B) Along the axis of the arch (C) Perpendicular to the axis of arch (D) Tangentially to the arch

Description : In a solid arch, shear force acts (A) Vertically upwards (B) Along the axis of the arch (C) Perpendicular to the axis of arch (D) Tangentially to the arch

Last Answer : (C) Perpendicular to the axis of arch

The resultant of all normal pressures acts (A) At C.G. of body (B) At center of pressure (C) Vertically upwards (D) At metacentre

Description : The resultant of all normal pressures acts (A) At C.G. of body (B) At center of pressure (C) Vertically upwards (D) At metacentre

Last Answer : Answer: Option C

A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground. (1) 1 : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Description : A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground ... : 1 (2) 1 : 2 (3) 1 : 4 (4) Cannot be found from the given information.

Last Answer :  1 : 1

A block P released from the top of a smooth inclined plane slides down the plane. Another block Q is dropped from the same point and falls vertically downwards. Which one of the following statements will be true if the friction offered by air is negligible? (a) Both blocks will reach the ground at the same time (b) Block P will reach the ground earlier than block Q (c) Both blocks will reach the ground with the same speed (d) Block Q will reach the ground with a higher speed than block P

Description : A block P released from the top of a smooth inclined plane slides down the plane. Another block Q is dropped from the same point and falls vertically downwards. Which one of the following statements will be ... with the same speed (d) Block Q will reach the ground with a higher speed than block P

Last Answer : Ans:(c)

Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Description : Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Last Answer : (3) Both will reach the same height Explanation: Galileo's experiment showed that if two bodies of unequal masses are dropped from the same height, the time required by them to reach the ground are equal ... reach the ground is equal to unity. This means that both of them will reach the same height.

Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Description : Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? (1) The heavier mass will reach greater height (2) The lighter mass will reach greater height (3) Both will reach the same height (4) Any of them may reach greater height

Last Answer : Both will reach the same height

A stone thrown at an angle `theta` to the horizontal reaches a maximum height h. The time of flight of the stone is :-

Description : A stone thrown at an angle `theta` to the horizontal reaches a maximum height h. The time of flight of the stone is :-

Last Answer : A stone thrown at an angle `theta` to the horizontal reaches a maximum height h. The time of flight of the stone is ... )/(g))` D. ` sqrt((2h)/(g))`

After striking the floor, a rubber ball rebounds (7/8)th of height from which it has fallen. Find the total distance that it travels before coming to rest, if it is gently dropped from a height of 420 meters. a) 2940 b) 6300 c) 1080 d) 3360

Description : After striking the floor, a rubber ball rebounds (7/8)th of height from which it has fallen. Find the total distance that it travels before coming to rest, if it is gently dropped from a height of 420 meters. a) 2940 b) 6300 c) 1080 d) 3360

Last Answer : b) 6300

Explain why a raindrop falling vertically in a still air reaches a constant velocity?

Description : Explain why a raindrop falling vertically in a still air reaches a constant velocity?

Last Answer : The air resistance will increase to the point where it counters the downward acceleration.

If a bomb is released from a plane moving with uniform velocity, then by the time the bomb reaches the ground, the plane will be (a) Vertically above the bomb (b) Ahead of the bomb (c) Behind the bomb (d) Ahead or behind, depending on its velocity

Description : If a bomb is released from a plane moving with uniform velocity, then by the time the bomb reaches the ground, the plane will be (a) Vertically above the bomb (b) Ahead of the bomb (c) Behind the bomb (d) Ahead or behind, depending on its velocity

Last Answer : Ans:(a)

A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Description : A girl throws a 2 kilogram rock vertically upward. It reaches a maximum height of 5 meters. What is the kinetic energy of the rock the instant it leaves the girl's hand?

Last Answer : ANSWER: 100 JOULES (accept 98 joules)

What standards do you think tennis players use when they throw one ball back from the three they get thrown by the ball boy/girl?

Description : What standards do you think tennis players use when they throw one ball back from the three they get thrown by the ball boy/girl?

Last Answer : answer:I asked my darling husband, who's an avid tennis player and fan. Paul says that there's really no science to it. All three balls look and feel the same. If you've ever been to a ... the ball to the ballboy/ballgirl, there really isn't an evaluation process. Keep two; toss one; play.

A boy presses a side of a blue pencil to a side of a yellow pencil, holding both pencils vertically. One inch of the pressed side of the blue pencil, measuring from its lower end, is smeared with paint. The yellow pencil is held steady while the boy slides the blue pencil down 1 inch, continueing to press it against the yellow one. He returns the blue pencil to its former position, then again it slides down 1 inch. He continues until he has lowered the blue pencil 5 times and raised it 5 times- 10 moves in all.Supposed that during this time the paint neither dries nor diminishes in quantity. How many inches of each pencil will be sneared with paint after the tenth move? -Riddles

Description : A boy presses a side of a blue pencil to a side of a yellow pencil, holding both pencils vertically. One inch of the pressed side of the blue pencil, measuring from its lower end, is smeared ... in quantity. How many inches of each pencil will be sneared with paint after the tenth move? -Riddles

Last Answer : At the start, 1inch of the yellow pencil gets smeared with wet paint. As the blue pencil is moved downward, a second inch of the blue pencils smears a second inch of the yellow pencil. Each pair ... of moves will smear 5 inches. This together with the initial inch, makes 6 inches for each pencil.

A boat takes 38 hrs for travelling downstream from point p to point q and coming back to a point r midway between p and q. If the velocity of the stream is 8 km/hr and the speed of the boat in still water is 28 km/hr. What is the distance between p and q? A) 720 B) 640 C) 510 D) 450

Description : A boat takes 38 hrs for travelling downstream from point p to point q and coming back to a point r midway between p and q. If the velocity of the stream is 8 km/hr and the speed of the boat in still water is 28 km/hr. What is the distance between p and q? A) 720 B) 640 C) 510 D) 450

Last Answer : ANSWER: A Explanation: Speed downstream = (28 + 8)km/hr = 36 km/hr Speed upstream = (28 – 8)km/hr = 20 km/hr Let the distance between p and q be ‘x’km Then, x/36 + (x/2)/20 = 38 x/36 +x/40 = 38 19x = 13680 X = 720 km Therefore the distance between p and q is 720km

A train p starts from delhi at 8pm and reaches kanyakumari at 10pm. While another train q starts from kanyakumari at 8pm and reaches delhi at 11pm. The two trains will cross each other at. A) 9.24pm B) 9.10pm C) 9.02pm D) 9.12pm

Description : A train p starts from delhi at 8pm and reaches kanyakumari at 10pm. While another train q starts from kanyakumari at 8pm and reaches delhi at 11pm. The two trains will cross each other at. A) 9.24pm B) 9.10pm C) 9.02pm D) 9.12pm

Last Answer : ANSWER: D Explanation:  Suppose the distance between delhi and kanyakumari is x km  The time taken by p to cover x km = 2hrs  The time taken by q to cover x km = 3hrs  Therefore speed of p = distance / time  = x ... = 1/y  5y = 6  y = (6/5 * 60)min= 72min  So the two trains meet at 9.12pm

Under which circumstances will have zero velocity and be still accelerating? a.The bob of a simple pendulum when at its mean position b.107 dynes c.A steamer while taking a turn d.A ball at its highest point of its rise when thrown up e.Tyres of a stationary automobile

Description : Under which circumstances will have zero velocity and be still accelerating? a.The bob of a simple pendulum when at its mean position b.107 dynes c.A steamer while taking a turn d.A ball at its highest point of its rise when thrown up e.Tyres of a stationary automobile

Last Answer : d. A ball at its highest point of its rise when thrown up

A girl throws a ball vertically upward, what is the MOMENTUM of the ball at its highest point?

Description : A girl throws a ball vertically upward, what is the MOMENTUM of the ball at its highest point?

Last Answer : ANSWER: ZERO

A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for the both the trips? A.35 kmph B.4o kmph C.48 kmph D.55 kmph E.None of these

Description : A person travels from P to Q at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for the both the trips? A.35 kmph B.4o kmph C.48 kmph D.55 kmph E.None of these

Last Answer : Answer – C (48 kmph) Explanation – Speed on return trip = 150% of 40 = 60 kmph Average speed = [2 x 40 x 60] / [40 + 6]km/hr =4800/100km/hr = 48 km/hr.

How does the angle of the sunlight striking Earth effect the weather?

Description : How does the angle of the sunlight striking Earth effect the weather?

Last Answer : Need answer

Ultraviolet radiation striking the earth is due to the depletion of – (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Description : Ultraviolet radiation striking the earth is due to the depletion of – (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Last Answer : (3) ozone Explanation: Ozone is a powerful oxidant (far more so than dioxygen) and has many industrial and consumer applications related to oxidation. This same high oxidizing potential, however, ... 100 parts per billion. This makes ozone a potent respiratory hazard and pollutant near ground level.

Ultraviolet radiation striking the earth is due to the depletion of (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Description : Ultraviolet radiation striking the earth is due to the depletion of (1) carbon monoxide (2) carbon dioxide (3) ozone (4) oxygen

Last Answer : ozone

A ball thrown straight up in the air at 70 m/s, how high does the ball go?

Description : A ball thrown straight up in the air at 70 m/s, how high does the ball go?

Last Answer : you need to factor in gravity which is -9.82 m/s i dont remember how to do it though

I am used to bat with, yet I never get a hit. I am near a ball, yet it is never thrown.What am I? -Riddles

Description : I am used to bat with, yet I never get a hit. I am near a ball, yet it is never thrown.What am I? -Riddles

Last Answer : Your Eyelashes!

What sport is a ball mostly thrown?

Description : What sport is a ball mostly thrown?

Last Answer : A+ SOFTBALL

What sport is a ball mostly thrown?

Description : What sport is a ball mostly thrown?

Last Answer : A+ SOFTBALL

When a ball is thrown upward what does the height reached by the ball depend on?

Description : When a ball is thrown upward what does the height reached by the ball depend on?

Last Answer : The speed/force which was imparted to it when it left thethrower's hand.

What is tje velocity of a ball thrown upward at 16 ft/sec?

Description : What is tje velocity of a ball thrown upward at 16 ft/sec?

Last Answer : If a ball is thrown vertically upward with a velocity of 160 ft/s, then its height after t seconds is s = 160t - 16t^2. If a ball is thrown vertically upward with a velocity of 160 ft/s, then its height after t seconds is s = 160t − 16t^2.

Horizontal distance travelled by a ball if it's thrown with initial velocity of 20 m s-1 at an angle of 30° is A. 24 m B. 56 m C. 35.3 m D. 36.3 m

Description : Horizontal distance travelled by a ball if it's thrown with initial velocity of 20 m s-1 at an angle of 30° is A. 24 m B. 56 m C. 35.3 m D. 36.3 m

Last Answer : 35.3 m

A ball is thrown horizontally from the top of a cliff. Assuming no air resistance, the acceleration of the ball while it is in flight is: w) in the vertical direction only x) in the horizontal direction only y) in the vertical and horizontal directions z) zero.

Description : A ball is thrown horizontally from the top of a cliff. Assuming no air resistance, the acceleration of the ball while it is in flight is: w) in the vertical direction only x) in the horizontal direction only y) in the vertical and horizontal directions z) zero.

Last Answer : ANSWER: W -- IN THE VERTICAL DIRECTION ONLY

A ball falling vertically from rest for 3 seconds travels very nearly: w) 14.7 meters x) 29.4 meters y) 44.1 meters z) 88.2 meters

Description : A ball falling vertically from rest for 3 seconds travels very nearly: w) 14.7 meters x) 29.4 meters y) 44.1 meters z) 88.2 meters

Last Answer : ANSWER: Y -- 44.1 METERS

A boy throws a ball vertically upward with a velocity of 6 meters per second. How long does it take the ball to return to the boy's hand?

Description : A boy throws a ball vertically upward with a velocity of 6 meters per second. How long does it take the ball to return to the boy's hand?

Last Answer : ANSWER: 1.22 SECONDS (accept: 1.2 seconds)

A boy is standing on an elevator which is traveling downward with a constant velocity of 30 meters per second. The boy throws a ball vertically upward with a velocity of 10 meters per second relative to the elevator. What is the velocity of the ball, MAGNITUDE AND DIRECTION, relative to the elevator shaft the instant the boy releases the ball?

Description : A boy is standing on an elevator which is traveling downward with a constant velocity of 30 meters per second. The boy throws a ball vertically upward with a velocity of 10 meters per second ... the ball, MAGNITUDE AND DIRECTION, relative to the elevator shaft the instant the boy releases the ball?

Last Answer : ANSWER: 20 METERS PER SECOND DOWN

P is the mid - point of side AB of a parallelogram ABCD. A line through B parallel to PD meets DC at Q and AD produced at R (see figure). -Maths 9th

Description : P is the mid - point of side AB of a parallelogram ABCD. A line through B parallel to PD meets DC at Q and AD produced at R (see figure). -Maths 9th

Last Answer : (i) In △ARB,P is the mid point of AB and PD || BR. ∴ D is a mid - point of AR [converse of mid - point theorem] ∴ AR = 2AD But BC = AD [opp sides of ||gm ABCD] Thus, AR = 2BC (ii) ∴ ABCD is a ... a mid - point of AR and DQ || AB ∴ Q is a mid point of BR [converse of mid - point theorem] ⇒ BR = 2BQ

If P(-l, 1), Q(3, -4), R(1, -1), S(-2, -3) and T(-4, 4) are plotted on the graph paper, then the point(s) in the fourth quadrant is/are -Maths 9th

Description : If P(-l, 1), Q(3, -4), R(1, -1), S(-2, -3) and T(-4, 4) are plotted on the graph paper, then the point(s) in the fourth quadrant is/are -Maths 9th

Last Answer : (b) In point P (-1, 1), x-coordinate is -1 unit and y-coordinate is 1 unit, so it lies in llnd quadrant. Similarly, we can plot all the points Q (3, -4), R (1, -1), S (-2, -3) and T (-4, 4), It is clear from the graph that points R and Q lie in fourth quadrant.