1. What will be the momentum of a body of mass 50 kg moving at a speed of 20 ms-1?
2. What is the sum of the kinetic energy and potential energy of an object is called?
3. Which of the following physical quantity measures the rate of work done?
4. An object with mass 'M' moves with speed 'V' and has kinetic energy 'A'. If its velocity is doubled, So what will be its kinetic energy-
5. Mohan having a mass of 40 kg. He climbs 50 steps of a staircase in 10s. If the height of each step is 15cm then what is his power?
(g = 10 m/s2)
(g = 10 m/s2)
6. What is the force exerted on any object by a solid surface in the normal direction?
7. If an object is grabbed by both the ends and the force applied on it is called . . . . . . . .
8. The working principle of a washing machine is
9. Which of the following is an example of potential energy?
1. Bricks placed on the roof of the house
2. Spring of a clock when it rotates
3. Compressed spring
4. Stored water in an elevated reservoir under the water supply system
1. Bricks placed on the roof of the house
2. Spring of a clock when it rotates
3. Compressed spring
4. Stored water in an elevated reservoir under the water supply system
10. An object weighing 20 kg is raised through a height of 2m. What will be the work done by the force of gravity in this process?
Take g = 10m/s2
Take g = 10m/s2
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