Question

A) A football is kicked into the air vertically upwards. What is its acceleration at highest point?

B) A football is kicked into the air vertically upwards. What is its velocity at highest point?

Answer 1

A) Step 1: Draw rough diagram for the football motion.


Step 2: Find acceleration at highest point.
When the football is kicked into air vertically upwards it will move under gravity. Acceleration of the football will always be vertical downwards and is equal to acceleration due to gravity.

Final answer: acceleration$=-g$

B)Step 1: Draw rough diagram for the football motion.

Step 2: Find velocity at highest point.

When the football is kicked into air vertically upwards it will move under gravity. The ball has some initial velocity. But as the ball moves upward its velocity will decrease. Thus, at the highest point of the motion the velocity will becomes zero and the ball starts to fall down.

Final answer: velocity=0