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Worksheetsimpulse and momentum
Total questions: 35
Worksheet time: 46mins
Pre- and post-collision information is shown. Identify the collision parameters that are consistent with the indicated change in momentum.
change in momentum = 15 kg m/s
change in momentum = 30 kg m/s
change in momentum = 0 kg
change in momentum = 7.5 kg m/s
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.
-2.5
-10
-18
-45
Calculate the impulse on the ball.
In an isolated system, the net ____ on that system is zero.
external force
internal force
time interval
displacement
Which has more momentum?
A hummingbird zipping down the street (v = 1 m/s)
A bus stopped at a stop sign
A bus barreling down the road (v = 10 m/s)
A hummingbird hovering at a feeder
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
An egg is thrown at a wall and at a bed sheet. The egg's impulse will be
Greater for the wall collision
Greater for the sheet collision
impulse is equal
. 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?
1 N
40 N
25 N
5 N
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
6030 kg
0,0134 kg
74,4 kg
80 kg
When the speed of an object is doubled, its momentum...
remains unchanged in accord with the conservation of momentum.
quadruples.
decreases.
doubles.
A 5 N force is applied to a 3 kg ball to slow it down from 9 m/s to 3 m/s. What is the impulse on the ball?
-18 N⋅s
-10 N⋅s
-45 N⋅s
-2.5 N⋅s
An insect applies 1.5 N of force to a windshield of a moving car. How much force does the windshield apply to the insect?
Not enough information
0.5 N
1.5 N
15,000 N
A 2 kg cart has a momentum of 16 kg m/s. What is its velocity?
32 m/s
8 m/s
0.125 m/s
18 m/s
2. Which of the following statements is incorrect about impulse and momentum?
When an object is at rest its momentum is greater
When an object’s velocity changes, momentum changes
When the time of collision is longer, force of impact is smaller
The amount of the object’s momentum is equal to the force needed to stop it.
3. A tennis player hits an approaching ball with a force of 750 N. If the player hits the ball in 0.002 s, how much impulse was imparted to the tennis ball?
1.5 N.s
5 N.s
1.3 N.s
2 N.s
5. A skateboard is rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg. m/s. What is the mass?
5 kg.
2 kg.
7 kg.
9 kg.
6. A pitcher throws a baseball with a mass of 0.5 kg. and a momentum of 10 kg. m/s north. What is the velocity?
15 m/s, north
18 m/s, north
2.5 m/s, north
20 m/s, north
7. Which has more momentum, a huge truck at rest or a small toy cart that is in motion?
toy cart
truck
same momentum
cannot be determined
10. 1. A baseball bat applies a 22 N force to a baseball over a period of 0.13 s, what is the change in momentum experienced by the ball?
8.34 N.s
23.5 N.s
15.789 N.s
2.86 N.s
The total momentum of two objects before collision is 450 kgm/s. What will be their total momentum after collision?
0 kgm/s
175 kgm/s
350 kgm/s
450 kgm/s
Two objects with a total mass of 20 kg has an initial momentum of 100 kg∙m/s. If the masses stick together after the collision, what is the final velocity of the masses?
1 m/s
5 m/s
50 m/s
100 m/s
Two billiard balls with mass 1.0 kg each are travelling towards each other. The first one is moving at a velocity of 3 m/s, while the other one moves at a velocity of -2m/s. After the collision, one billiard ball moves to the left at a speed of 2 m/s. What is the speed of the other ball?
-3 m/s
-2 m/s
2 m/s
3 m/s
A 2.0-kg chunk of putty moving at 5.0 m/s collides with and sticks to a 8.0-kg bowling ball that is initially at rest. The bowling ball with its putty passenger will then be set in motion with what speed?
1 m/s
2 m/s
3 m/s
4 m/s
A 125 kg car moving at 12 m/s hits a 200 kg car moving at -13m/s. If the first car bounces back at -12.5 m/s what is the velocity of the second car after the collision?
1.2 m/s
2.3 m/s
3.2 m/s
4.1 m/s
