Class 10 Physics ICSE IMPORTANT QUESTION SET1

1. A body of mass 5 kg initially at rest is subjected to a force of 20 N. What is the kinetic energy acquired by the body at the end of 10 s?
2. A bullet of mass 50 g moving with a velocity of 400ms1 strikes a wall and goes out from the other side with a velocity of100ms1 . Calculate work done in passing through the wall.
3. Energy released by the fission of one atom is 200 MeV. Calculate the energy released in kWh when one gram of uranium undergoes fission.
4. Calculate the energy equivalent of 1 g of substance.
5. State three differences between potential energy and kinetic energy.
6. Name five different forms of energy.
7. Identify the energy changes in the following:
   1. Glowing electric bulb
   2. Microphone
   3. Photovoltaic cell
   4. Electric cell
8. A body of mass 2 kg is thrown vertically upwards with an initial velocity of 20 m/s. What will be its potential energy at the end of 2 s?
9. A boy weighing 42 kg makes a high jump of 1.5 m
1. What is his kinetic energy at the highest point?
2. What is his potential energy at the highest point? (g = 10 m/s)

IMPORTANT MATH QUESTION SET1