Momentum — Quiz Answers

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Objects 1 and 2 collide and stick together. Which best describes the momentum of the resulting single object?

A
It is greater than the momentum of object 1 but less than the momentum of object 2.
B
It is equal to the momentum of object 1 plus the momentum of object 2.
C
It is equal to the momentum of object 1 minus the momentum of object 2.
D
It is less than the momentum of object 1 but greater than the momentum of object 2.
3

In a car, how does an air bag minimize the force acting on a person during a collision?

A
It increases the change in momentum of the person.
B
It decreases the change in momentum of the person.
C
It decreases the time it takes for the person to stop.
D
It increases the time it takes for the person to stop.
4

Which formula can be used to express the law of conservation of momentum, where p is equal to momentum?

A
p sub i is greater than p sub f
B
p sub i is equal to p sub f
C
p sub i is less than p sub f
D
p sub i is not equal to p sub f
6

The law of conservation of momentum states that, if left alone, what happens to the total momentum of two interacting objects that make up a system?

A
it increases over time
B
it remains the same
C
it eventually becomes zero
D
changes based on how they collide
7

When someone throws a ball, the action force is the person pushing on the ball. What is the reaction force?

A
the ball pushing on the person
B
the ball being pulled away from the person
C
the ball pushing against air
D
the ball being pulled toward the ground
8

What is the momentum of a 5 kilograms object that has a velocity of 1.2 meters per second ?

A
3 point 8 kilograms times m over s
B
4 point 2 kilograms times m over s
C
6 point 0 kilograms times m over s
D
6 point 2 kilograms times m over s
9

A car has a momentum of 20 comma 000 kilograms times m over s What would the car’s momentum be if its velocity doubles?

A
20 comma 000 kilograms times m over s
B
10 comma 000 kilograms times m over s
C
40 comma 000 kilograms times m over s
D
80 comma 000 kilograms times m over s
10

According to Newton’s third law of motion, which are equal?

A
momentum and velocity
B
mass and momentum
C
action force and reaction force
D
collision time and stop time

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Momentum — Quiz Answers — KCPS Physics First 2027