Physics
posted by Dakota .
A 2.9 kg ball strikes a wall with a velocity of 7.5 m/s to the left. The ball bounces off with a velocity of 6.3 m/s to the right. If the ball is in contact with the wall for 0.20 s, what is the constant force exerted on the ball by the wall? _________ N to the right

Physics 
bobpursley
force*time=2.9(7.5+6.3)
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