20, This picture is an example of____________
Elastic Collision
Inelastic collision
21,
This picture is an example of ____________
Elastic Collision
Inelastic collision
22,
The law of conservation of momentum states that thetotal momentum of all objects interacting with each other will________________________ no matter of the nature of the forcesbetween the object.
increase
decrease
remain constant
fluctuate
23,
This is an example of what kind ofcollision?
Elastic
Inelastic
24,
What is Newton's Law of Conservation ofMomentum?
Object in motion stays in motion and an object at reststays at rest unless acted on by a outside force
Force = mass x acceleration
For every action there is an equal and oppositereaction
Momentum can not be created or destroyed without outsideforces
25,
True/False: Elastic Collision causes arebound.
True
False
26,
Which of the following does NOT affectmomentum?
Mass
Speed
Direction
Color of Object
27,
A biker with a mass of 75 kg moves along the path with aconstant velocity of 5 m/s. What is the biker'smomentum?
25 m/s
375 m/s
25 kg m/s
375 kg m/s
28,
A runner has a momentum of 670 kg m/s and is travellingat a velocity of 9 m/s. What is his mass?
6030 kg
0.0134 kg
74.4 kg
80 kg
29,
The purpose of crumple zones on a car is to
decrease time of impact.
increase force of impact.
increase the time of impact.
decrease the impulse during impact.
30,
The difference between a car hitting a wall vs. a carhitting a hay stack is
the Impulse on the car hitting the wall isgreater
the change in momentum of the car hitting the wall isgreater
the force on the car hitting the hay stack isgreater
the collision time of the car hitting the hay stack isgreater
31,
A constant force of 4.5 N acts on a 7.2-kg object for10.0 s. What is the change in the object's momentum?
45 kg m/s
72 kg m/s
32.4 kg m/s
0.45 kg m/s
32,
In a physics experiment, two carts of mass 1.5 kg eachare rolled towards each other. The orange cart has a velocity of 2m/s and the blue cart has a velocity of -1m/s. The carts sticktogether when they collide. Calculate their finalspeed.
0.5 m/s
1.0 m/s
0.33 m/s
0.67 m/s
33
If two objects have the same mass, then the fastermoving object has ____________ momentum.
more
less
the same
34,
While playing pool, the white cue ball strikes the 8ball. Before the collision, the cue ball's velocity was 10 m/s andthe 8 ball was at rest. If both ball's have a mass of 0.15 kg andthe cue ball's velocity after the collision is 2 m/s, what is the 8ball's velocity?
2 m/s
8 m/s
-2 m/s
1.5 m/s
35,
The total momentum before a collision is _________ thetotal momentum after a collision.
equal to
less than
more than
It depends on the type of collision
36,
A 0.40 kilogram bird is flying at a constant speed of8.0 m/s. What is the bird's kinetic energy?
3.2 J
4.2 J
2.0 J
12.8 J
37,
A 2600 kilogram car is moving at a speed of 25 m/s. Howmuch kinetic energy does the car have?
427,500 J
237,500 J
812,500 J
537,500 J
