Calculating Impulse and Mass of a Basketball

[giboneal]

Homework Statement

A playerbounces a basketball on the ground. If the ground exerts a force F = 10N on the ball in 0.1 seconds, what is the impulse on the basketball. If the ball is simply dropped from a height of 2m, assuming the impulse to be the same as before, what is the basketball's mass?

Homework Equations

impulse= delta p = m delta v = F delta t

The Attempt at a Solution

For the impulse I have 10N x 0.1 seconds which = 1 N s

For the mass of the basketball I tried m = delta p/delta v

So delta p is the impulse 1 N x s but I don't know how to find delta v

 

[Redbelly98]

The ball is dropped from a height of 2 m. Can you find v just before it impacts the floor?

It sounds like we should assume the collision is elastic, i.e. the speed of the ball leaving the floor is the same as the speed just before impact.