Question

directions: the red ball and blue ball have the same weight. study the pictures, and answer the questions.
before collision collision after collision
a red blue red blue red blue
b red blue red blue red blue
c red blue red blue red blue

1. when both balls move toward each other, what happens after they collide?

a. the red ball stops. b. the blue ball stops.
c. both balls change directions. d. both balls move the same way.

1. when both balls move the same direction and collide, what happens?

a. they keep moving the same direction. b. the red ball stops.
c. the blue ball stops. d. the blue ball changes directions.

1. if the balls have different weights, would the results be the same? why or why not?

1. describe what happens when a moving ball collides with an unmoving ball.

Explanation:

1. For two equal-mass balls moving toward each other, they exchange velocities (reverse directions) after collision, matching option c.
2. For equal-mass balls moving in the same direction, the leading ball continues, and the trailing one follows in the same direction, matching option a.
3. Collision results depend on mass; different masses mean momentum transfer differs, so outcomes change.
4. For equal-mass balls, the moving ball stops, and the stationary ball moves off with the original velocity of the moving ball.

Answer:

1. c. Both balls change directions.
2. a. They keep moving the same direction.
3. No, the results would not be the same. The transfer of momentum and velocity during a collision depends on the mass of the objects; balls with different weights will have different changes in speed and direction after colliding.
4. When a moving ball of equal weight collides with an unmoving ball, the moving ball stops, and the previously unmoving ball begins moving with the same speed and direction that the first ball had before the collision.