Physics GK · all questions

Work, Energy and Power
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Q101

The energy contained in an object is 1500J and its mass is 15kg. Find the height of the object above the ground.

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Q102

The kinetic energy of an object is 120J and its mass is 15 kg Find the velocity of the object-

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Q103

A boy of 50 kg mass climbs 44 stairs in 10 seconds. If the height of each stair is 15cm then find his power?

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Q104

In a hydro power, what is the energy that is converted into electrical energy?

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Q105

A 2 kg object is moving at an acceleration of 4 m/s². The total force applied to it is-

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Q106

In a system when there is a collision between two nonelastic bodies, it consists of:

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Q107

An object with a mass of 80 kg is moving with a velocity of 60 ms^-1. What will be the momentum generated in the object?

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Q108

Which one of the following is not a form of stored energy?

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Q109

If a bullet is fired from the gun, comes backwards, what will be the kinetic energy of the gun?

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Q110

The speed of a body of mass 100 kg is increases 5 ms^-1 to 15 ms^-1 in 5 s and a uniform acceleration is imposed on it. Calculate the force exerted on the body.

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Q111

A 2,000 kg truck travelling at 10 m/s collides with a car parked at a traffic light. After the collision, both move together at a speed of 8m/s. Mass of car is . . . . . . . .

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Q112

1 horse power is equal to approximately . . . . . . . . watts.

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Q113

What is the kinetic energy of an object of mass 15 kg moving at the velocity of 8ms^-1?

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Q114

When a continuous force acts on an object of 8 kg mass for 2 seconds, it increases the velocity of the object from 4 ms^-1 to 9 ms^-1. What is the magnitude of the applied force?

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Q115

The momentum of an object depends on . . . . . . . .

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Q116

What would be the energy contained at a height of 6m by a body of mass 50kg?

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Q117

What is the form of energy that is not generated when riding a bicycle?

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Q118

Measurement of mass of an object is called measurement of

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Q119

Which of these can neither be created nor destroyed?

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Q120

A boy of 50 kg mass climbs 40 stairs in 9 seconds. If the height of each stair is 15cm, then find his power. (g = 10ms^-2)

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