On a distant planet, a ball is dropped from rest from a height of 15.0m. It hits the ground and bounces back up until it is 1.00m below its original position. The trip down and back up takes 10.0s. Find the ball’s average speed, displacement, and average velocity.
average speed: 1.4 m/2
displacement: 14m
average velocity: ?
Can someone see if it's right?
vectors and scalars
... displacement and velocity are vector quantities ... speed is a scalar
average speed ... the ball travels 29.0 m (down and up) in 10.0 s ... 2.90 m/s
the final displacement of the ball is ... 1 m below it's starting point
average velocity ... displacement / time = 1.00 m / 10.0 s