A 2.0 kg ball strikes a wall with a velocity of 8.7 m/s to the left. The ball bounces off with a velocity of 7.5 m/s to the right. If the ball is in contact with the wall for 0.22 s, what is the constant force exerted on the ball by the wall?
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F=ma
F=m(difference in v)/t
Taking the right direction to be positive:
F=2(7.5-(-8.7))/0.22
F=147.27N
Given all the values in the question are to 2SF, answering to this accuracy is appropriate so F=150N (2SF). Hope this helps!
F=m(difference in v)/t
Taking the right direction to be positive:
F=2(7.5-(-8.7))/0.22
F=147.27N
Given all the values in the question are to 2SF, answering to this accuracy is appropriate so F=150N (2SF). Hope this helps!