Projectile Motion – Return Speed

00:00 1 marks

A ball is thrown vertically upwards with speed *u*. Air resistance is negligible. What is the speed of the ball when it returns to its starting point?

A

2*u*
B

*u*
C

*u*/2
D

0

Hint Hint

Hint

Consider the conservation of mechanical energy since air resistance is negligible. How does the kinetic energy at the start compare to the kinetic energy when it returns to the same height?

Answer Answer
Mark Scheme Mark Scheme
Explanation Explanation
Examiner Tips Examiner Tips
Common Errors Common Errors
Real World Context Real World Context

Answer Answer

Complete Answer

*u*

Mark Scheme Mark Scheme

Answer Explanation Answer Explanation

Examiner Tips Examiner Tips

Common Errors Common Errors

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