A billiard ball is hit and travels in a straight line. If π ππ is the distance of the ball from
its initial position at π‘ π ππ, then π = 100π‘2 + 100π‘. If the ball hits the cushion that is 39 ππ from its
initial position, at what velocity does it hit the cushion?
1
Expert's answer
2021-11-11T12:26:38-0500
Given:
s(t)=100t2+100ts=39cm.β39=100t2+100tβ100t2+100tβ39=0β2(100)β100Β±(100)2β4(β39)(100)βββ200β100Β±10000+15600ββ=200β100Β±160β=200β100+160β[t can not be negative]=20060β=103β
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