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1. What is momentum?
A
Momentum is a term used in classical mechanics.
B
Momentum is a measure of how heavy an object is.
C
Momentum is a measure of how hard it is to stop an object.
2. When is the total momentum of a system of objects conserved?
A
The total momentum is conserved when there is no net force on the system.
B
The total momentum is conserved when the objects change direction or speed.
C
The total momentum is conserved when something acts on the system.
3. Why is the total momentum of a system conserved when there is no net force on the system?
A
Because something acts on the system
B
Because nothing acts on the system
C
Because the objects change direction or speed
4. What happens to the total momentum of a system if there is no net force acting on it?
A
The total momentum of the system increases.
B
The total momentum of the system remains constant.
C
The total momentum of the system decreases.
5. A 3 kg object moves at 4 m/s. What is its momentum?
A
12 kg·m/s
B
7 kg·m/s
C
1.5 kg·m/s
6. What is required for momentum to be conserved in a system?
A
The system must be isolated with no net external forces acting on it
B
The system must be moving at a constant speed
C
The system must have equal mass on both sides
7. A 0.5 kg toy car is moving at a velocity of 10 m/s. What is its momentum?
A
0.5 kg·m/s
B
10 kg·m/s
C
5 kg·m/s
8. A 2 kg ball is rolling at a velocity of 3 m/s. What is its momentum?
A
12 kg·m/s
B
6 kg·m/s
C
5 kg·m/s
9. If two ice skaters push off from each other, what happens to their total momentum?
A
It becomes zero
B
It increases
C
It remains the same
10. What happens to the momentum of an object if its mass doubles?
A
The momentum becomes zero.
B
The momentum doubles.
C
The momentum remains the same.
11. How does velocity affect the momentum of an object?
A
The faster the object is moving, the greater its momentum.
B
Velocity does not impact the momentum of an object.
C
The slower the object is moving, the greater its momentum.
12. What is the relationship between mass and momentum?
A
Momentum is not related to mass.
B
Mass does not affect momentum.
C
The greater the mass, the greater the momentum.