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Physics, 28.01.2020 08:31 csteward2917

65 points! answer every question! need asap!

imagine two billiard balls on a pool table. ball a has a mass of 2 kilograms and ball b has a mass of 3 kilograms. the initial velocity of ball a is 9 meters per second to the right, and the initial velocity of the ball b is 6 meters per second to the left. the final velocity of ball a is 9 meters per second to the left, while the final velocity of ball b is 6 meters per second to the right.

1. explain what happens to each ball after the collision. why do you think this occurs? which of newton’s laws does this represent?

2. what can you say about the total momentum before and after the collision?

3. what do you think would happen to the velocity of each ball after the collision if the masses and initial velocities of each ball were the same?

4. the mass of ball a is 10 kilograms and the mass of ball b is 5 kilograms. if
the initial velocity is set to 3 meters per second for each ball, what is the
final velocity of ball b if the final velocity of ball a is 2 meters per second?
use the elastic collision equation to find the final velocity of ball b. assume
ball a initially moves from right to left and ball b moves in the opposite
direction. identify each mass, velocity, and unknown. show your work,
including units, and indicate the direction of ball b in your answer.

5. if the mass of each ball were the same, but the velocity of ball a were twice
as much as ball b, what do you think would happen to the final velocity of
each ball after the collision? to answer this question, create a hypothesis in
the form of an if-then statement. the “if” is the independent variable, or the
thing that is being changed. the “then” is the dependent variable, or what you will measure as the outcome.

imagine two billiard balls on a pool table. ball a has a mass of 7 kilograms and ball
b has a mass of 2 kilograms. the initial velocity of the ball a is 6 meters per second
to the right, and the initial velocity of the ball b is 12 meters per second to the left.

1. when the two balls hit each other, what will happen if it is a perfectly
inelastic collision?

2. compare the final velocity of the balls.

3. what can you say about the total momentum before and after the collision?

in real life, collisions are neither purely elastic nor inelastic, but instead, fall
somewhere between. however, you can still classify many collisions as primarily
elastic or inelastic. for example, hitting a baseball is a great example of an elastic
collision, whereas catching the baseball is a great example of an inelastic collision.

1. explain why hitting and catching a baseball are great examples of each type
of collision.

2. describe another real-world example of a perfectly elastic collision.

3. describe another real-world example of a perfectly inelastic collision.

1. ball a, with a mass of 20 kilograms, is moving to the right at 20 meters per
second. at what velocity should ball b, with a mass of 40 kilograms, move so
they both come to a standstill upon collision? identify each mass, velocity,
and unknown. show your work, including units, and indicate the direction of
ball b in your answer.

2. ball c, with a mass of 30 kilograms, is moving to the left at 10 meters per
second. at what velocity should ball d, with a mass of 10 kilograms, move to
the right and collide with ball c so that ball d rebounds to the left with a
velocity of 30 meters per second and ball c rebounds to the right with a
velocity of 10 meters per second? assume the collision to be perfectly elastic.
identify each mass, velocity, and unknown. show your work, including units,
and indicate the direction of ball d in your answer.

3. ball e, with a mass of 10 kilograms, is moving to the right at 20 meters per
second. ball f is moving to the left at 20 meters per second. upon collision,
ball f comes to a standstill and ball e moves to the left at twice its original
speed. what is the mass of ball f? identify each mass, velocity, and unknown. show your work, including units.

no trolls! i really need , answer every question!

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