Momentum
Which of the following objects has the greatest momentum?
A 2 kg ball moving at 3 m/s
A 5 kg ball moving at 1 m/s
A 1 kg ball moving at 8 m/s
A 3 kg ball moving at 2 m/s
A truck with a mass of 2000 kg is moving at a velocity of 15 m/s. What is the magnitude of its momentum?
133.3 kg⋅m/s
30,000 kg⋅m/s
2015 kg⋅m/s
75,000 kg⋅m/s
Which of the following statements best describes the relationship between impulse and change in momentum?
Impulse is equal to the rate of change of momentum.
Impulse is equal to the change in momentum.
Impulse is the square of the change in momentum.
Impulse is inversely proportional to the change in momentum.
A constant force of 20 N is applied to an object for 5 seconds. What is the impulse on the object?
4 N⋅s
100 N⋅s
25 N⋅s
0.25 N⋅s
A 0.2 kg baseball is thrown with a velocity of 30 m/s and is then hit by a bat, sending it in the opposite direction with a velocity of -40 m/s. What is the magnitude of the impulse on the ball?
2 N⋅s
14 N⋅s
28 N⋅s
70 N⋅s
Two objects have momenta that are represented by vectors. Object A has a momentum of (4, 3) kg⋅m/s and object B has a momentum of (-2, 5) kg⋅m/s. What is the magnitude of the total momentum of the system?
3.61 kg⋅m/s
8.25 kg⋅m/s
10.00 kg⋅m/s
2.00 kg⋅m/s
Which of the following is a characteristic of a closed system?
Mass can enter, but energy cannot.
Energy can enter, but mass cannot.
Both mass and energy can be exchanged with the surroundings.
Neither mass nor energy can be exchanged with the surroundings.

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In which of the following scenarios is momentum conserved?
A rocket launching into space.
A car accelerating on a road.
Two carts colliding on a frictionless track.
A ball rolling down a hill.
What does the law of conservation of momentum state?
The total momentum of a system is always increasing.
The total momentum of a closed system remains constant.
The total momentum of an open system remains constant.
Momentum is only conserved in elastic collisions.
A 2 kg cart moving at 5 m/s collides with a stationary 3 kg cart. If the two carts stick together after the collision, what is their final velocity?
0 m/s
2 m/s
3 m/s
5 m/s