Impulse and Momentum

The mass and ______ of an object affect the momentum of its motion

Which of the following statements is true?

• A greater force changes the momentum.

• A greater force creates a large change in momentum.

• A greater force creates a smaller change in momentum.

• A greater force does not cause any change in momentum.

Which of the following units is used to express momentum?

• kg * m

• kg * m/s

• kg * m/s^2

• kg/m/s

Which of the following statements is true?

• In an inelastic collision, only the momentum is conserved; the total energy in the system is not conserved.

• An object with a small mass cannot have a large momentum even if the object is travelling at a high speed.

• In any system with two objects, the loss of momentum of one object equals the gain in momentum of the other object.

• Action-reaction forces do not cancel each other because the action force is always greater than the reaction force.

Which has the greatest momentum?

• a 1018 kg race car travelling at 8 m/s

• a 500 kg motorcycle travelling at 25 m/s

• a 600 g toy truck moving at a velocity of 1.5 m/s

• a 40 kg shopping cart rolling along at 0.5 m/s

Which has the least momentum?

• a 1018 kg race car travelling at 8 m/s.

• a 500 kg motorcycle travelling at a velocity of 1.5 m/s.

• a 600 g toy truck moving at a velocity of 1.5 m/s

• a 40 kg shopping cart rolling along at 0.5 m/s

In which situation will a delivery truck have a greater momentum than a tourist bus?

• The delivery truck has twice the mass and speed of the tourist bus.

• The delivery truck is slower but has the same mass as the tourist bus.

• The tourist bus is more massive than the truck but they move with the same speed.

• The mass and speed of the tourist bus are larger than the mass and speed of the delivery truck.

Which of the following is true about collision in an isolated system?

• The total momentum before collision is less than the total momentum after collision.

• The total kinetic energy before collision is less than the total kinetic energy after collision.

• The total momentum before collision is greater than the total momentum after collision.

• The total momentum and energy before collision is equal to the total momentum and energy after collision.

A 5 N force impacts an impulse 15 kg * m/s^2. The force acted on objected for a period of __

• 3 s

• 20 s

• 75 s

• 10 s

An object travelling at 4.0 m/s has a momentum of 16 kg m/s. What is the mass of the object?

• 12 kg

• 64 kg

• 20 kg

• 4 kg