1. The energy contained in an object is 1500J and its mass is 15kg. Find the height of the object above the ground.
2. The kinetic energy of an object is 120J and its mass is 15 kg Find the velocity of the object-
3. A boy of 50 kg mass climbs 44 stairs in 10 seconds. If the height of each stair is 15cm then find his power?
4. In a hydro power, what is the energy that is converted into electrical energy?
5. A 2 kg object is moving at an acceleration of 4 m/s2. The total force applied to it is-
6. In a system when there is a collision between two nonelastic bodies, it consists of:
7. 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?
8. Which one of the following is not a form of stored energy?
9. If a bullet is fired from the gun, comes backwards, what will be the kinetic energy of the gun?
10. 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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