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1.

A particle of mass m moving in the x direction with speed 2v is hit by another particle of mass 2m moving in they y direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to :A. `56%`B. `62%`C. `44%`D. `50%`

Answer» Correct Answer - A
Discussion
2.

The figure shows the position-time (x-t) graph of one-dimensional motion of a body of mass 0.4kg. The magnitude of each impulse is A. `0.4Ns`B. `0.8Ns`C. `1.6Ns`D. `0.2Ns`

Answer» Correct Answer - B
Discussion
3.

A machine gun fires a bullet of mass 40 g with a velocity `1200 ms^-1`. The man holding it can exert a maximum force of 144 N on the gun. How many bullets can be fire per second at the most?A. TwoB. FourC. OneD. Three

Answer» Correct Answer - D
Discussion
4.

A bomb of mass 16kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velolcity of the 12 kg mass is `4 ms^-1`. The kinetic energy of the other mass isA. `144J`B. `288J`C. `192J`D. `96J`

Answer» Correct Answer - B
Discussion