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
Description : A projectile is fired at an angle to the vertical. Its horizontal range will be maximum when is (A) 0° (B) 30° (C) 45° (D) 60°
Last Answer : (C) 45°
Description : Derive the formula for the range and maximum height achieved by a projectile thrown from the origin with initial velocity at an angel θ
Last Answer : Derive the formula for the range and maximum height achieved by a projectile thrown from the origin ... velocity at an angel θ to the horizontal.
Description : Projectile will attain its maximum range, if it is fired at an angle of A. 30° B. 47° C. 90° D. 45°
Last Answer : 45°
Description : The direction of projection for the range of a projectile to be maximum on an inclined plane having angle of inclination 30? to the horizontal, whould be a.45? with horizontal b.30? with vertical c.30? with horizontal d.60? with inclined plane e.45? with inclined plane
Last Answer : b. 30? with vertical
Description : When horizontal range of a projectile equal to the distance through which projectile will rise, then the angle of projection of the particle will be equal to a.36? b.24? c.48? d.107 dynes e.76?
Last Answer : e. 76?
Description : If the horizontal range of a projectile is four times its maximum height, the angle of projection is
Description : Statistics , Problems with Two Projectors ? From the top of a 100 meter high tower an object is thrown at a 30 ° angle with a horizontal speed of 50 ms . At the same time another object from ... সাথে with the same velocity horizontally . At what time and at what height will the two objects meet ?
Last Answer : answer:
Description : How does the unbalanced force of gravity affect the horizontal and vertical velocity of an object in projectile?
Last Answer : In the absence of air resistance, the force of gravity has noeffect on the horizontalcomponent of a projectile's velocity, and causes the verticalcomponent of its velocityto increase by 9.8 meters (32.2 feet) per second downward forevery second of its flight.
Description : During the motion of a projectile fired from the earth surface, ______. (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant
Last Answer : (4) horizontal component of its velocity remains constant Explanation: The motion of a projectile is a two-dimensional motion-Horizontal motion and vertical motion-that take place independent ... continuously affects the vertical component, so the vertical motion is a uniformly accelerated motion.
Description : After a projectile is fired horizontally near the earth's surface, the horizontal component of its velocity, neglecting any air resistance: w) increases steadily x) decreases steadily y) first decreases, then increases z) remains constant
Last Answer : ANSWER: Z -- REMAINS CONSTANT
Description : During the motion of a projectile fired from the earth surface, _______ (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant
Last Answer : horizontal component of its velocity remains constant
Description : The angle in which a cricket ball should be hit to travel maximum horizontal distance is : (1) 60° with horizontal (2) 45° with horizontal (3) 30° with horizontal (4) 15° with horizontal
Last Answer : (2) 45° with horizontal Explanation: This has to do with the equation of a parabola or trajectory which is z = (tane)x 2 cos 9) 2. We can see that if the ball is fired at a 45 degree angle from the ground, the horizontal distance will be a maximum.
Description : The maximum shear stress occurs on the filament which makes an angle with the horizontal plane equal to (A) 30° (B) 45° (C) 60° (D) 90
Last Answer : (B) 45°
Description : A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of ... N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°
Last Answer : Answer: Option B
Description : The angle between skew back of a flat arch and the horizontal, is kept approximately equal to (A) 0° (B) 30° (C) 60° (D) 90
Last Answer : Answer: Option C
Last Answer : 45° with horizontal
Description : For the maximum range of a projectile the angle of projection should be a.90? b.30? c.22 d.45? e.15?
Last Answer : d. 45?
Description : A projectile reaches maximum range, when angle of projection is at?
Last Answer : 450
Description : A projectile is fired into the air at an angle of 23 degrees. At what other angle would this projectile have the same range if air resistance is neglected? w) 46 degrees x) 60 degrees y) 67 degrees z) 68 degrees
Last Answer : ANSWER: Y -- 67 DEGREES
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
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
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
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))`
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.
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
Description : A player making a long jump is an example of ______. (1) Projectile motion (2) Rotatory motion (3) Spinning motion (4) Horizontal motion
Last Answer : (1) Projectile motion Explanation: Projectile motion is a form of motion in which an object or particle is thrown near the earth's surface and it moves along a curved path under the action of gravity only.
Description : A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move ... be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13
Last Answer : b. 5 ? 7
Description : If Chris Bromham took off on his Yamaha and jumped a horizontal distance of 74.0 m across a row of cars and assuming that he started and landed at the same level and was airborne for 1.3 s, what was his initial (angled) velocity as he left the ground?
Last Answer : I really need help. If someone can explain this to me, it'll be great!
Description : An ice skater is spinning like a top on a frozen lake. She raises her arms from their initial horizontal position to a vertical position over her head. The skater will experience an increase in angular velocity due to what physical law?
Last Answer : ANSWER: LAW OF CONSERVATION OF ANGULAR MOMENTUM
Description : A tree breaks due to storm and the broken part bends so that the top of the tree touches the ground making an angle 30° with it. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Find the height of the tree. -Maths 9th
Last Answer : The broken part bends so that the top of the tree touches the ground making an angle 30 °. The distance between the foot of the tree to the point where the top touches the ground is 8 m. Original height of ... After rationalising Now we have , A`BC = AB + BC Take LCM So , original height of tree is
Description : A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the rate of 3 m/sec. How fast is he approaching the wa
Last Answer : A ladder is inclined to a wall making an angle of 30° with it. A man is ascending the ladder at the ... 3 m/sec. How fast is he approaching the wall ?
Description : The critical angle for a transport solid is 30°. Then its refractive index is (a) 2.5 (b) 1.8 (c) 1.5 (d) 2
Last Answer : Ans:(d)
Description : The angle of minimum deviation of an equiangular prism, having a refractive index of 1.732 is (a) 60° (b) 30° (c) 45° (d) 0°
Last Answer : Ans:(a)
Description : If the angle of incidence formed on a concave mirror at a point is 30° then the angle of reflection will be: (1) 15° (2) 30° (3) 60° (4) 90°
Last Answer : (2) 30° Explanation: The angle between the incident ray and the normal is known as the angle of inci dence. The angle between the reflected ray and the normal is known as the angle of reflection.
Description : The asbestos cement pipes are generally laid A. Horizontally B. Vertically C. At an angle of 30° D. At an angle of 60°
Last Answer : ANS: B
Description : The screens are fixed A. Perpendicular to the direction of flow B. Parallel to the direction of flow C. At an angle 30° to 60° to the direction of flow D. None of these
Last Answer : ANS: C
Description : For determining the support reactions at A and B of a three hinged arch, points B and Care joined and produced to intersect the load line at D and a line parallel to the load line through A at D'. Distances AD, DD ... reactions at A and B is (A) 30° (B) 45° (C) 60° (D) 90
Last Answer : (D) 90
Description : The angle of intersection of a contour and a ridge line, is (A) 30° (B) 45° (C) 60° (D) 90°
Last Answer : (D) 90°
Description : A well conditioned triangle has no angle less than (A) 20° (B) 30° (C) 45° (D) 60°
Last Answer : (B) 30°
Description : The angle between two plane mirrors of optical square, is (A) 20° (B) 30° (C) 45° (D) 60°
Description : If the long chord and tangent length of a circular curve of radius R are equal the angle of deflection, is (A) 30° (B) 60° (C) 90° (D) 120°
Last Answer : D
Description : ABCD is a regular parallelogram plot of land whose angle BAD is 60°. If the bearing of the line AB is 30°, the bearing of CD, is (A) 90° (B) 120° (C) 210° (D) 270°
Last Answer : (C) 210°
Description : Select the incorrect statement. Effective angle of shearing resistance (A) Increases as the size of particles increases (B) Increases as the soil gradation improves (C) Is limited to a maximum value of 45° (D) Is rarely more than 30° for fine grained soil
Last Answer : (C) Is limited to a maximum value of 45°
Description : The coefficient of active earth pressure for a loose sand having an angle of internal friction of 30° is (A) 1/3 (B) 3 (C) 1 (D) 1/2
Last Answer : (A) 1/3
Description : Select the incorrect statement. (A) Effective cohesion of a soil can never have a negative value. (B) Effective angle of internal friction for coarse grained soils is rarely below 30°. (C ... (D) Effective angle of internal friction is a complicated function of mineralogy and clay size content.
Last Answer : Answer: Option A
Description : The angle of internal friction of clays, is usually (A) 0° to 5° (B) 5° to 20° (C) 20° to 30° (D) 30° to 45
Description : The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3 , is (A) 4 t/m2 (B) 5 t/m2 (C) 6 t/m2 (D) 7 t/m2
Description : What is the value of included angle of a triangular notch for maximum discharge? (A) 30° (B) 60° (C) 90° (D) 120°
Last Answer : (C) 90°
Description : The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is (A) 30° (B) 40° (C) 45° (D) All the above
Last Answer : Answer: Option D