Luke drives 35 mph for 5 miles. He then drives 80 mph for 0.0083 hours. What is his average speed?

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?

How is zig zagging a form of acceleration?

Use vsepr theory to predict the molecular geometry of the molecule hcn.