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Momentum & Impulse & Law of conservation

Total questions: 25

Worksheet time: 28mins

Name
Class
Date
1.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

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

c)

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

d)

The total momentum before a collision is not related to the total momentum after a collision.

2.

If two objects collide or explode, they experience

a)

the same force for the same amount of time.

b)

different forces for the same amount of time.

c)

different forces for different amounts of time.

d)

the same force for different amounts of time.

3.

If two objects collide or explode, they experience

a)

the same impulse causing the same change in momentum.

b)

different impulses causing the same change in momentum.

c)

different impulses causing different changes in momentum.

d)

the same impulse causing different changes in momentum.

4.

Pick all of the scenarios below that are collisions.

a)

A catcher catches a baseball.

b)

A pitcher throws a baseball.

c)

Two cars smash into each other.

d)

Two students on roller skates push away from each other.

e)

A bug smashes into a windshield.

5.

Which cart in the image experiences a greater impulse?

a)

E

b)

F

c)

Same

d)

Not enough info

6.

Which cart in the image experiences a greater change in velocity?

a)

E

b)

F

c)

Same

d)

Not enough info

7.
The law of conservation of momentum states that, 
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
8.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
9.
If 2 objects collide and stick together, what will happen to their velocities?
a)
velocities will increase
b)
velocities will decrease
c)
velocities will stay the same
d)
none of the above
10.
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
a)
0 kgm/s
b)
30 kgm/s
c)
50 kgm/s
d)
10 kgm/s
11.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
12.
In this type of collision, objects tend to "stick" together.
a)
elastic
b)
inelastic 
c)
They "stick" together in both types of collisions
13.
An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be 
a)
0 m/s
b)
1 m/s
c)
2 m/s
d)
4 m/s
14.
In any collision (crash) the ______ is ALWAYS constant.
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
15.
A 10kg toy truck moves at 5m/s East. It collides and bounces off of a 5kg toy car moving 10 m/s moving west. Which equation would you use to solve for the final velocity of the car?
a)
m1v1i+m2v2i=m1v1f+m2v2f
b)
(m1+m2)vi=m1v1f+m2v2f 
c)
m1v1i+m2v2i=(m1+m2)vf
16.
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s.  The time for the collision is _____ seconds.
a)
1.8
.
.
b)
2.5
c)
3.6
d)
10
17.
A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s.  What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
a)
1 N
b)
40 N
c)
25 N
d)
5 N
18.

The product of the objects; Mass and Velocity

a)

Impulse

b)

Momentum

c)

Linear momentum

d)

Collision

19.

The product of the net or unbalanced force and time during with the force acts the change of momentum

a)

Momentum

b)

Collision

c)

Impulse

d)

Linear Momentum

20.

________ is the product of the mass and velocity of an object Before & After the collision

a)

Linear momentum

b)

Momentum

c)

Law of conservation

d)

Impulse

21.

The total momentum of an object is an isolated system will remain constant unless an external force acts on it.

a)

Impulse

b)

Linear Momentum

c)

Momentum

d)

Law of Conservation

22.

Is the interaction that occurs when the two or more object hits each other.

a)

Elastic Collision

b)

Collision

c)

Inelastic Collision

d)

Perfectly inelastic Collision

23.

A collision in which both momentum and Kinetic energy are conserved

Example : Sphere with the same mass

a)

Elastic Collision

b)

Collision

c)

Inelastic Collision

d)

Perfectly Inelastic Collision

24.

Objects of equal masses move off seperately at different speed in the same direction after collision

a)

Elastic Collision

b)

Collision

c)

Inelastic Collsion

d)

Perfectly Inelastic Collision

25.

When two bodies of the same masses join together during collision and move together as one after the collision.

Example : Clay

a)

Elastic Collision

b)

Collision

c)

Inelastic Collision

d)

Perfectly inelastic Collision

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