Question

A man drops a 10 kg rock from the top of 5 metre ladder. What is its speed just before it hits the ground ?


9.8m/s

9.9m/s

9.7m/s

9.6m/s​

Answer 1

Answer:

v=10m/s; Therefore, its speed just before it hits the ground is 10 m/s and the kinetic energy is 500J.