What are the similarities between mountains, plateaus, and plains?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

What is the frequency if a wave that pases a given pount 22 times in 2 seconds

Many science fiction movies and tv shows have detected using a nuclear weapon to destroy astroids what problems does plait see with this plan