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When a body falls freely towards the earth, then its total energy

first increases and then decreasesremains constantdecreasesincreases

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A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car

becomes 16 times that of initialbecomes 4 times that of initialbecomes twice to that of initialdoes not change

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In case of negative work, the angle between the force and displacement is

180°90°45°0°

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An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same

kinetic energypotential energymomentaacceleration

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A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g =10 m s⁻²)

zero0.6 J6 J6 × 10³ J

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Which one of the following is not the unit of energy?

kilowatt hourkilowattnewton meterjoule

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The work done on an object does not depend upon the

initial velocity of the objectangle between force and displacementforce applieddisplacement

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Water stored in a dam possesses

potential energykinetic energyelectrical energyno energy

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A body is falling from a height h. After it has fallen a height h/2 , it will possess

more kinetic and less potential energyhalf potential and half kinetic energyonly kinetic energyonly potential energy