Description : An object with a constant speed – (1) is not accelerated (2) might be accelerated (3) is always accelerated (4) also has a constant velocity
Last Answer : (1) is not accelerated Explanation: Acceleration is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity. An object with constant speed will have no acceleration as the speed is uniform.
Description : A body whose speed is constant (a) Must be accelerated (b) Might be accelerated (c) Has a constant velocity (d) Cannot be accelerated. -Science
Last Answer : might be accelerated
Description : When the driving torque is more than load torque, flywheel is ______ 1. Accelerated 2. Decelerated 3. Constant velocity 4. Can’t be determined
Last Answer : 1. Accelerated
Description : When the driving torque is more than load torque, flywheel is ______ a) Accelerated b) Decelerated c) Constant velocity d) Can’t be determined
Last Answer : a) Accelerated
Description : According to the theory of relativity, which of the following always remains constant ? (1) Length of an object (2) Time (3) Space (4) Velocity of light
Last Answer : Velocity of light
Description : I just need to know a formula, or a lot more formulas, but there are always both unknowns in a formula.
Last Answer : I don't know how to fix it ... you have to do it yourself
Description : When the torque required by the machine is more than the torque supplied by the motor, the flywheel is (A) Accelerated (B) Retarded (C) Rotating with constant speed (D) Any of the above
Last Answer : (B) Retarded
Description : According to the theory of relativity, which of the following al-ways remains constant? (1) Length of an object (2) Time (3) Space (4) Velocity of light
Last Answer : (4) Velocity of light Explanation: The theory of relativity, or simply relativity, generally encompasses two theories of Albert Einstein: special relativity and general relativity. Concepts introduced by the ... to each other. The speed of light is nonetheless invariant, the same for all observers.
Description : An object travelling with constant velocity has A. constant momentum B. zero momentum C. increasing momentum D. decreasing momentum
Last Answer : constant momentum
Description : What is the initial velocity of an object if it is moving 10 meters per second after 2 seconds with a constant acceleration of 4 meters per second squared?
Last Answer : ANSWER: 2 METERS PER SECOND
Description : A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the kinetic energy of the car -Physics 9th
Last Answer : The kinetic energy becomes 16 time that of initial kinetic energy Final speed = 4 times of initial speed The kinetic energy of car Where, m = mass of car v = initial velocity of car ... of initial velocity, then kinetic energy Hence, The kinetic energy becomes 16 time that of initial kinetic energy
Description : A horizontal stream of charged particles is accelerated to velocity `3 xx10^(7) m s^(-1)` immediately before being allowed into an electric field betw
Last Answer : A horizontal stream of charged particles is accelerated to velocity `3 xx10^(7) m s^(-1)` ... field between plates = rate of change of potential]
Description : Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field `E` through a distance of `1.0m` The electr
Last Answer : Electron are emitted from an electron gun at almost zero velocity and are accelerated by an electric field ... .5 nm` may be emitted by the hydrogen?
Description : An object in equilibrium always has zero: w) velocity x) momentum y) mass z) acceleration.
Last Answer : ANSWER: Z -- ACCELERATION
Description : The average speed of a moving object during a given interval of time is always: A. the magnitude of its average velocity over the interval B. the distance covered during the time ... its acceleration multiplied by the time interval E. one-half its acceleration multiplied by the time interval
Last Answer : B. the distance covered during the time interval divided by the time interval (Answer)
Description : With the increase in depth, the hydrostatic pressure in an un-accelerated incompressible fluid (in a constant gravitational field) (A) Decreases (B) Increases linearly (C) Increases exponentially (D) Remain constant
Last Answer : (B) Increases linearly
Description : An object is in static equilibrium when it is _____. (1) at rest (2) moving in a circular path (3) moving with uniform velocity (4) accelerating at high speed
Last Answer : (1) at rest Explanation: When forces acting on an object which is at rest are balanced, the object is said to be in a state of static equilibrium. The resultant of these forces equals zero.
Description : An object is in static equilibrium when it is _______. (1) at rest (2) moving in a circular path (3) moving with uniform velocity (4) accelerating at high speed
Last Answer : (1) at rest
Description : Speed of an object travelling around a circle depends upon A. angular velocity B. radius C. circumference D. both A and B
Last Answer : both A and B
Description : Which of the following is also called "cancer of the blood" -- an uncontrolled, greatly accelerated production of white cells. Is it: a) polycythemia b) leukemia c) sickle-cell anemia d) none of these
Last Answer : ANSWER: B -- LEUKEMIA
Description : There are three equations of uniformly accelerated motion, the odd one out is A. final_velocity = initial_velocity + (acceleration time) B. distance_moved = (initial_velocity time) ... acceleration distance_moved) D. final_velocity = initial_velocity + (2 acceleration distance_moved)
Last Answer : final_velocity = initial_velocity + (2 × acceleration × distance_moved)
Description : What kind of particles will be accelerated in the Superconducting Super Collider?
Last Answer : ANSWER: PROTONS
Description : An object moving in a circle of radius ‘r’ with a constant speed ‘v’ has a constant acceleration towards the center equal to A. v²⁄r B. v⁄r C. v²×r D. v×r
Last Answer : v²⁄r
Description : Object moving along a circular path is A. in equilibrium B. not in equilibrium C. not moving with constant speed D. in random motion
Last Answer : not in equilibrium
Description : A satellite moving round the earth with a uniform speed has _____? A. An accelerated motion B. No acceleration at all C. Uniform acceleration D. Uneven acceleration
Last Answer : ANSWER: C
Description : A satellite moving round the earth with a uniform speed has------? A. An accelerated motion B. No acceleration at all C. Uniform acceleration (Answer) D. Uneven acceleration
Last Answer : C. Uniform acceleration (Answer)
Description : Which stall has the greatest angle of attack? a. Low speed stall b. High speed stall (shock stall) c. Deep stall d. Accelerated stall
Last Answer : c. Deep stall
Description : If a body moves with a constant speed in a circle – (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant
Last Answer : (4) its velocity remains constant Explanation: A body moving with a constant speed in a circle is an example of uniform circular motion. The velocity vector is constant in magnitude but ... magnitude or the direction constitutes a change in the velocity which leads to change in acceleration.
Description : A body moving in a circular path with a constant speed has a – (1) constant velocity (2) constant acceleration (3) constant kinetic energy (4) constant displacement
Last Answer : (3) constant kinetic energy Explanation: In circular motion, the magnitude of the velocity of the body is constant but the direction is constantly changing. This means that, even though the speed is ... accelerating. At any instant, the direction of the velocity is a tangent to the circular path.
Description : If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with– (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration
Last Answer : (3) constant acceleration Explanation: In this case the given equation shows that that the velocity is linear with time and therefore the particle is moving with constant acceleration because for a ... acceleration the graph of the velocity time graph should be in linear with the time function.
Description : Consider a car driving around a circular bend in the road. Which of the following CANNOT be constant? w) velocity of car x) speed of car y) nonrelativistic mass of car z) angular momentum of the car about the center of the circle
Last Answer : ANSWER: W -- VELOCITY OF CAR
Description : The crack of a bullwhip results from the bullwhip's tip: w) approaching the speed of sound x) exceeding the speed of sound y) moving with constant velocity z) none of the above
Last Answer : ANSWER: X -- EXCEEDING THE SPEED OF SOUND
Description : A satellite is observed to move in a circle about the earth at a constant speed. This means that the force acting upon it is: w) zero x) parallel to the direction of the satellite ... velocity y) perpendicular to the direction of the satellite's instantaneous velocity z) none of the above
Last Answer : ANSWER: Y -- PERPENDICULAR TO THE INSTANTANEOUS DIRECTION OF THE SATTELITE’S VELOCITY
Description : A helicopter is ascending vertically with a constant speed of 6 meters per second relative to the ground. At the instant the helicopter is 60 meters above the ground it releases a package. What is ... of the package, relative to the ground, the instant the package is released by the helicopter?
Last Answer : ANSWER: 6 METERS/SECOND UP
Description : A body moving in a circular path with a constant speed has a (1) constant velocity (2) constant acceleration (3) constant kinetic energy (4) constant displacement
Last Answer : constant kinetic energy
Description : If a body moves with a constant speed in a circle (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant
Last Answer : its velocity remains constant
Description : If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration
Last Answer : constant acceleration
Description : Explain the velocity-tune graphs of an object: i) Moving with zero acceleration. ii) Moving with constant positive acceleration.
Last Answer : Explain the velocity-tune graphs of an object: i) Moving with zero acceleration. ii) ... acceleration. iv) Moving with non-uniform acceleration.
Description : If we are told that an object has a constant velocity what can we say about the force on that object?
Last Answer : you can say that there is no net force on the object; that is,the net force is zero
Description : What does an object that is speeding up at a constant rate in the positive direction what does the velocity vs time graph look like?
Last Answer : A line angled upward
Description : With increase in the velocity of an object its mass will a) Increase b) Decrease c) Remain constant d) None of the above
Last Answer : a) Increase
Description : An object travels from a fixed position 5 seconds to start the journey. After 20 m / s. Velocity is. Next 10 sec. How far will it cover ?
Last Answer : The distance covered by the object in the next 10 seconds s = vt s = 20 × 10 = 200m
Description : What is the maximum velocity of a thrown object ?
Last Answer : Velocity is zero at the maximum height of the thrown object.
Description : Why is the initial velocity zero in the case of a falling object ?
Last Answer : Because the falling object starts falling from a fixed position. So its forward velocity is taken to be zero.
Description : Heat energy of an object is - The average energy of the molecules of the object The total energy of the molecules of the object The average velocity of the molecules of the object The average P.E. of the molecules of the object
Last Answer : (2) The total energy of the molecules of the object Explanation: The transfer or flow due to the difference in temperature between the two objects is called heat. Heat energy of an object is the total energy of the molecules of the object.
Description : Velocity required by an object to orbit around Earth is A. 9 km s-1 B. 7 km s-1 C. 8 km s-1 D. 10 km s-1
Last Answer : 8 km s-1
Description : An object whose velocity is changing is said to be in a state of A. acceleration B. rest C. equilibrium D. Brownian motion
Last Answer : acceleration
Description : The non-relativistic mass of an object w) must be the same as its weight x) depends on where you measure it y) does not change with increasing velocity z) is greatest at the poles
Last Answer : ANSWER: Y -- DOES NOT CHANGE WITH INCREASING VELOCITY
Description : An object is projected vertically upward near the surface of the earth. At the very top of its path, the object's velocity is zero, and its acceleration is: w) 0 x) 9.8 meters per second squared DOWNWARD y) 9.8 meters per second squared UPWARD z) depends on the mass of the object
Last Answer : ANSWER: X -- 9.8 METERS PER SECOND SQUARED DOWNWARD
Description : When the velocity of an object is tripled, another quantity which is tripled at the same time is the object's: w) momentum x) potential energy y) kinetic energy z) mass
Last Answer : ANSWER: W -- MOMENTUM