Momentum
Impulse
Mathy Things
Collisions
Random
100

What are the units for momentum

kgm/s

100

If a big force and a small force hit the same object for the same amount of time, which force would give the bigger impulse?

The bigger force

100

What is the impulse exerted on person that experiences an 85 N net force over 0.7 seconds?

59.5 kgm/s

100

Explain an Inelastic collision scenario and give an example. (in the context of momentum conservation)

Any time two or more objects collide and DO stick together.

100

What spider-man villain has multiple mechanical arms?

Doctor Octopus

200

True or False: A larger object always has greater momentum. 


Correct and explain if false, explain if true.

False, momentum depends on mass AND velocity

200

True or False: The change in momentum of an object is always equal to the impulse exerted on the object.

True! Not only does the impulse cause the momentum to change, but the size of the impulse is also identical to the amount that the momentum changes

200

If the momentum of an object stays the same, but the mass has tripled, what must have happened to the velocity?

Velocity must have been cut into a third (divided by 3)

200

Explain an elastic collision scenario and give an example. (in the context of momentum conservation)

Any time two or more objects collide and DO NOT stick together.

200

Mr. Wister and Mr. Davenport love this movie that involves the game quidditch, but Mr. Vause has never seen it. What's the movie?

Harry Potter



300

When is momentum not conserved?

When it is not a closed system (outside forces act on it)

300

Which impulse is higher?

A. A school bus, going 30 mph, comes to a stop by running into the side of a building.

B. A school bus, going 30 mph, comes to a stop by slowly pressing on the brakes as it approaches a stop sign.

The impulses are the same because the bus in both situations has the same starting and final momentum.

300

The total momentum of Steven on his bike is 770 kgm/s. What is his mass, if he is riding at 10 m/s?

77 m/s

300

The recoil momentum of a tank initially at rest is (smaller than/greater than/the same as) the momentum of the projectile that it shoots. Choose one and explain your answer.

THE SAME AS.

This is because the tank/projectile system starts with a momentum of zero, so according to the Law of Conservation of Momentum, it should end up with a total momentum of 0. This means the tank has some negative momentum and the projectile has a positive momentum, and these must be the same size to add up to zero.

300

In what movie can you find Chuck Norris judging a sporting event on ESPN-8?

Dodgeball

400
If the mass of a wagon is quadrupled by loading more boxes into it, but the momentum of the moving wagon only doubles, what must have happened to the velocity?

Velocity was cut in half

400

You have a ball of clay and a bouncy ball, both with the same mass. The ball of clay sticks to the door, and the bouncy ball bounces back off the door. If they are both thrown at the same speed, which object, if either, has the greater impulse? Explain

The bouncy ball! Momentum changes more when the object changes direction compared to when it just comes to a stop.

400

A bullet train with a mass of 48,000 kg slows down from 130 m/s to 50 m/s. What is the impulse exerted on the train by the brakes?

-3,840,000 kgm/s

400

A 400 kg paddle boat moves with a velocity of 6.25 m/s collides head-on with a 200 kg raft that started out moving at -2 m/s to the left. If the boat and the raft stick together what is there final velocity?

3.5 m/s

400

In the office, manager Michael Scott wants to be Santa and fights with everyone when Jim appoints who as Santa Instead?

Phyllis

500

A piece of clay at rest is exploded into FOUR pieces. The first piece of clay has a momentum of -10 kg m/s to the left. The second piece has a momentum of 2 kg m/s to the right. The third piece goes to the right with a momentum of 11 kgm/s. What is the momentum of the fourth piece, and in what direction does it move?

3 kgm/s, to the left (-3 kgm/s)

500

If two identical eggs are thrown at the same velocity, one at a wall and one at a curtain, what is the difference in the collision that occurs? Use the words impulse, force, and time properly in your explanation.

The impulse on both eggs is the same, but the force on the "wall" egg is much greater because the time of impact is much less, because the wall does not have as much "give" as the curtain.

500

Give an example of a safety feature or technique that can be explained using impulse and explain how it works, using the terms impulse, force, and time.

Multiple safety feature works that increase the time of impact (possibly by being soft or cushiony), which then lessens the force due to the impulse being the same with or without the technique/feature.

500

Two kickballs, red and green, roll into each other and bounce off. The red ball, mass of 1.5 kg, is originally moving at 3 m/s to the right, and it hits the green ball which has a mass of .8 kg was originally moving at -5 m/s to the left. After the bounce,  the green ball is moving at 4.38 m/s. How fast was the red kickball going after the bounce.

-2 m/s

500

In this Nickelodeon tv show, you can find a puppet making fun of its operator for putting his shoes on this way: one sock, then shoe, then the other sock, then the other shoe.

Victorious