Unit 2 Quick Check 2: Momentum and Impulse

What is the relationship between impulse and change in momentum?

• Impulse and change in momentum are independent concepts.
• Impulse is equal to the mass times the velocity.
• Impulse is equal to the change in momentum.
• Impulse means the same as force, so if the force changes, the impulse changes.

A heavy object and a light object experience the same change in momentum. Which object experienced a larger impulse?

• The heavy object experienced a larger impulse.
• The light object experienced a larger impulse
• The heavy and light objects experienced the same impulse
• There is not enough information to know which object experienced a larger impulse.

A force is applied to an object for 2 seconds. The momentum of the object increases by 10 kg·m/s. What is the magnitude of the average force applied?

• 2.5 N
• 5 N
• 10 N
• 20 N

A bowling ball and a golf ball are both moving at the same speed. Which object has the larger momentum?

• The bowling ball has larger momentum.
• The golf ball has larger momentum.
• The bowling ball and golf ball have the same momentum.
• There is not enough information to determine which object has larger momentum.

An object is moving at a constant speed on a friction-free surface. Then, a force is applied to the object, doubling its velocity. What is the ratio of the final momentum to the initial momentum?

• 0.5
• 1
• 2
• 4

A car collides with a huge truck. The car bounces off in the opposite direction. The truck keeps going forward at about the same speed. Which vehicle has the larger change in momentum?

• The car will have the larger change in momentum
• The truck will have the larger change in momentum
• The car and truck will have the same change in momentum
• There is not enough information to determine which object will have the larger change in momentum

An object is moving with constant velocity. The net force on the object is zero. Which of the following is true about the object's momentum?

• The object's momentum is constant.
• The object's momentum is decreasing.
• The object's momentum is increasing.
• The object's momentum is zero.

An object is moving with constant acceleration. The net force on the object is constant. Which of the following is true about the object's momentum?

• The object's momentum is constant.
• The object's momentum is decreasing.
• The object's momentum is increasing.
• The object's momentum is zero.

What is the relationship between impulse and momentum?

• Impulse is equal to momentum.
• Impulse is the change in momentum.
• Impulse is the product of mass and velocity.
• Impulse is always greater than momentum.

If a 5 kg object is moving at a velocity of 10 m/s, what is its momentum?

• 50 kg·m/s
• 5 kg·m/s
• 15 kg·m/s
• 100 kg·m/s