Newton's laws and momentum

Question 1 of 10

A force of 100 N acts for 0.5 s. The impulse is ___ N s.

Question 2 of 10

A ball A of mass 2 kg moving at 6 m/s hits a stationary ball B of mass 2 kg. After the collision, A moves on at 2 m/s in the same direction. (a) State the principle of conservation of linear momentum. (b) Find the velocity of B after the collision. (c) Calculate the total kinetic energy before and after and state whether the collision is elastic.

Question 3 of 10

A 2 kg trolley moving at 10 m/s collides with a stationary 1 kg trolley and they move off together. Find their common velocity.

Question 4 of 10

A ball A of mass 4 kg moving at 5 m/s hits a stationary ball B of mass 2 kg. After the collision, A moves on at 2 m/s in the same direction. (a) State the principle of conservation of linear momentum. (b) Find the velocity of B after the collision. (c) Calculate the total kinetic energy before and after and state whether the collision is elastic.

Question 5 of 10

A gun of mass 4 kg fires a bullet of mass 0.02 kg at 400 m/s. Find the recoil velocity of the gun.

Question 6 of 10

Impulse is equal to

Question 7 of 10

Momentum is defined as

Question 8 of 10

The principle of conservation of linear momentum states that

Question 9 of 10

A gun of mass 5 kg fires a bullet of mass 0.05 kg at 300 m/s. Find the recoil velocity of the gun.

Question 10 of 10

A ball A of mass 2 kg moving at 5 m/s hits a stationary ball B of mass 1 kg. After the collision, A moves on at 2 m/s in the same direction. (a) State the principle of conservation of linear momentum. (b) Find the velocity of B after the collision. (c) Calculate the total kinetic energy before and after and state whether the collision is elastic.