GCSE Momentum

The momentum of an object depends upon the object's ___________&_____________.

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car

• bike

• they are equal

• cannot determine using the info provided

Momentum is a ____________________ quantity

• science

• scalar

• vector

• energy

When two objects collide in a perfectly elastic collision, the P_before is ____________ the P_after.

• more than 

• less than 

• equal to

• unrelated to

What is the unit for momentum?

• m/s

• kg/s

• kg/m

• kg m/s

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s

• 100 kg*m/s

• 250 kg*m/s

• 500 kg*m/s

Which object listed below has the greatest momentum?

• A 0.05 kg object rolling at 0.2 m/s.

• A 0.15 kg object rolling at 2 m/s.

• A 0.15 kg object rolling at 1 m/s

• A 0.4 kg object rolling at 2 m/s.

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, the combined speed of the two players just after the collision would be:

• 2 m/s 

• 3.4 m/s 

• 4.6 m/s 

• 7.1 m/s

A constant force of 4.5 N acts on a 7.2kg object for 10.0 s. What is the change in the object's momentum?

• 45 kg m/s

• 72 kg m/s

• 32.4 kg m/s

• 0.45 kg m/s

While playing pool, the ball A strikes the ball B. Before the collision, the ball A's velocity was 10 m/s and the ball B was at rest. If both ball's have a mass of 0.15 kg and the ball A's velocity after the collision is 2 m/s, what is the ball B's velocity?

• 2 m/s

• 8 m/s

• -2 m/s

• 1.5 m/s