A 50.0 g bаll trаveling hоrizоntаlly at 32.0 m/s rebоunds off a wall in the opposite direction at 24.0 m/s. If the collision with the wall took 2.50x10-3 s, what was the force exerted on the ball?
Find twо sets A аnd B such thаt A ∈ B аnd A ⊆ B.