Projectile Motion

1.3 Projectile Motion

Multiple Choice

Ball A is thrown horizontally with an initial velocity and Ball B is dropped from rest. They both start at the same height and are dropped at the same time. If we ignore air resistance, which ball hits the ground first?

• They hit at the same time

• Ball A

• Ball B

• It depends on the mass

Multiple Choice

At which point does the soccer ball have a vertical velocity of 0m/s?

• B

• D

• C

• None of the above

Explanation Slide...

Both Lemming A and Lemming B will hit the ground at the same time because the time it takes for an object to fall does not depend on its horizontal velocity.

Multiple Choice

Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?

• A

• B

• Both at the same time