Momentum, work, energy and power

Question 1 of 10

The momentum of a 3 kg body moving at 7 m/s is ___ kg m/s.

Question 2 of 10

A 5 kg mass is raised through 3 m. Find the potential energy gained. (g = 10 m/s²)

Question 3 of 10

A force of 40 N moves a body 6 m in the direction of the force. Find the work done.

Question 4 of 10

Power is measured in watts.

Question 5 of 10

The principle of conservation of momentum states that

Question 6 of 10

Kinetic energy is always conserved in a collision.

Question 7 of 10

Doubling the speed of a body doubles its kinetic energy.

Question 8 of 10

1200 J of work is done in 20 s. Find the power developed.

Question 9 of 10

Momentum is conserved in all collisions where no external force acts.

Question 10 of 10

The momentum of a 12 kg body moving at 6 m/s is ___ kg m/s.