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Momentum & Impuls 2

Total questions: 25

Worksheet time: 21mins

Name
Class
Date
1.
The impulse-momentum theorem states that
a)
the impulse on an object is equal to the change in momentum it causes 
b)
the force on a moving object is equal to the magnitude of the impulse.
c)
the impulse on an object is greater than the change in momentum it causes 
d)
the impulse on an object is less than the change in momentum it causes
2.

A ball traveling at 2 m/s collides with another ball at rest and bounces off of it. What type of collision is it?

a)

Elastic

b)

Inelastic

c)

Normal

3.

An object traveling at 5 m/s collides with another object. Both stick together and continue to travel. What type of collision is this?

a)

Elastic collision

b)

Inelastic collision

c)

Normal collision

4.

The conservation of momentum means...

a)

The momentum before an event disappears after the event

b)

The momentum before and after an event are equal

c)

The momentum before an event increases after the event

d)

The momentum before and after an event changes

5.

In a closed system, momentum is never...

a)

transferred or destroyed

b)

created or destroyed

c)

transferred

d)

created

6.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
7.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
8.

An impulse depends on

a)

weight and force

b)

force and time

c)

electric charge and time

d)

none of these

9.

In an equation Impulse is represented with the letter...

a)

I

b)

M

c)

J

d)

P

10.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
11.
Which takes more force  to catch, a bowling ball or a ping pong ball?
a)
bowling ball because it has more momentum
b)
ping pong ball because it has more momentum
c)
both require the same amount of force when catching
d)
bowling ball because it has less momentum
12.
An egg is thrown at a wall and at a bed sheet. The force of impact will be
a)
Greater against the wall
b)
Greater against the sheet
c)
Force is equal
13.
The purpose of air bags on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
14.

For an object that gets slower, the Δp is:

a)

positive

b)

negative

c)

neutral

15.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
16.

During a collision. an object experiences an impulse. How can this impulse be calculated?

a)

Multiplying force by time

b)

Multiplying mass by velocity

c)

Dividing velocity by time

d)

Multiplying mass by acceleration

17.

When a cannon fires a cannon ball, it recoils backwards. This occurs because of...

a)

Energy in the system is conserved

b)

Energy in the system is increased

c)

Momentum in the system is conserved

d)

Energy in the system is not conserved

18.

An egg landing on a soft surface will remain intact. The surface increases the _____ and decreases the _____ during the impact

a)

impulse, time

b)

impulse, force

c)

force, time

d)

time, force

19.

In an elastic collision...

a)

objects bounce off each other

b)

objects stick together

c)

objects stick together for a while then separate

d)

one object flips over the other

20.

In an elastic collision...

a)

only momentum is conserved

b)

only energy is conserved

c)

both momentum and energy are conserved

d)

neither momentum nor energy are conserved

21.

Impulse can be determined by calculating the area under graph of

a)

force (f) - time (t) graph

b)

impulse (J) - time (t) graph

c)

momentum (p) - time( t) graph

d)

velocity (v) - time (t) graph

22.

Which option is correct for inelastic collision?

a)

Total momentum is CONSERVED, kinetic energy is CONSERVED

b)

Total momentum is NOT CONSERVED, kinetic energy is CONSERVED

c)

Total momentum is NOT CONSERVED, kinetic energy is NOT CONSERVED

d)

Total momentum is CONSERVED, kinetic energy is NOT CONSERVED

23.

m1u1 + m2u2 = m1v1 + m2v2


This equation represents :

a)

ELASTIC collision

b)

Perfectly INELASTIC collision

24.

For __________ collision, the total kinetic energy IS NOT CONSERVED. Some energy is lost and converted to other form of energy.

a)

Elastic

b)

Inelastic

25.

A change in momentum from applying a force for a certain time is:

a)

momentum

b)

impulse

c)

power

d)

impact

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