Physics – Class 11 Practice Test 3

1. What causes the motion of a body which is initially in the state of rest?

2. At what angle of projectile (θ) is the horizontal range minimum?

3. A body moving with a constant velocity on normal ground initially has an energy of 1000 J. If the final energy is 800 J, what is the work done and which force causes this work?

4. The force that keeps the body moving in circular motion is _______

5. The energy possessed by a body by the virtue of its position is called ______

6. A variable mass body with an initial mass of 5 kg is moving with a velocity of 5 m/s initially, after some time the velocity increases to 10 m/s, what is the new mass if the body is moving in the absence of any external force?

7. Energy involved in creating work _____

8. The centrifugal force always acts _____

9. Two bodies in contact experience forces in ________

10. What is the correct expression for Work?