What does the Kinetic Energy (KE) of a moving body depend upon?
A. Weight and its position
B. Mass and its position
C. Mass and velocity
D. Mass and acceleration
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A man puts 13kg object on his head by raising the object 1.5m above from the surface of earth. Then work done will be: (g = 10ms-2 )
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What is the energy in a compressed spring?
A. Potential
B. Chemical
C. Kinetic
D. Electric
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A ball of mass 2 kg, moving with a velocity of 5m/s collides with another body of mass 4 kg at rest. What will be the velocity of both balls after the collision?
A. 2.66 and 3.33
B. 1.66 and 4.22
C. 1.66 and 3.33
D. 1.6 and 1.33
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What is the correct equation for finding the acceleration?
A. a = t v − u
B. a = u + v t
C. a = t v + u
D. a = 2 v + u
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A 20g bullet is fired horizontally at a velocity of 150 ms-1 with a 3 kg pistol. What is the regressive velocity of the pistol?
A. -1.25ms-1
B. -1.0ms-1
C. -1.5ms-1
D. -2.0ms-1
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If a boy leaves a gas-filled balloon that goes upward direction, its potential energy will be?
A. Decrease
B. Remains constant
C. It is infinite
D. Increase
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An object of mass 20kg is moving at a velocity of 6m/s. What is the kinetic energy of the object?
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The gravitational potential energy of an object at a point above the ground. Is defined as the work done in . . . . . . . .
A. Lifting it from the ground to the point opposite gravity
B. Applying gravitational force on it
C. Keep it at the center
D. Placing it on the ground of against gravity
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A moving object essentially receives-
A. Kinetic energy
B. Potential energy
C. Mechanical energy
D. Thermal energy
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An 8 kg iron ball and an 3 kg aluminium ball are dropped from a height of 20 meters. Which of the following quantity amount will be same in them above 10 m height from the ground?
A. Kinetic energy
B. Acceleration
C. Potential energy
D. Momentum
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A force of 125 N is acting on an object, that object is moved up to 5 m in the direction of the force, what will be the work done by the force.
A. 625W
B. 625Pa
C. 625N
D. 625J
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. . . . . . . . particles have a greater kinetic energy-
A. Liquid
B. Plasma
C. Solid
D. Gas
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A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum
A. just after it is dropped
B. when it is just on the half-way
C. just before it touches the ground
D. when it touches the ground
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What is wrong statement about kinetic energy?
A. During static state the energy contained in the object is called kinetic energy
B. The energy received by an object based on its speed is known as kinetic energy
C. K . E . = 2 1 ( m v 2 )
D. Moving objects have kinetic energy
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When a body falls freely under gravity then the work done by gravity is
A. Positive
B. Negative
C. Zero
D. Infinity
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Capacity of doing work is known as-
A. Power
B. Pressure
C. Energy
D. Force
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If the work done is negative, then what will be the angle between the force and displacement?
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A constant force acts on an object of mass 5 kg for a period of 2 seconds. This increases the velocity of the object from 4 ms-1 to 7 ms-1 . Find the amount of force used.
A. 5.5 N
B. 8.5 N
C. 7.5 N
D. 4.8 N
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What does the kinetic energy equal?
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