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a ball rolls off a horizontal shelf a height h above the floor and takes 0.5s to hit.For the ball to take 1.0s to reach the floor the shelf's height above the floor would have to be A) 2h B)3h C) sqrt(2) h D)4h
 one year ago
 one year ago
a ball rolls off a horizontal shelf a height h above the floor and takes 0.5s to hit.For the ball to take 1.0s to reach the floor the shelf's height above the floor would have to be A) 2h B)3h C) sqrt(2) h D)4h
 one year ago
 one year ago

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ShadowysBest ResponseYou've already chosen the best response.1
rolls off=no initial vertical component of velocity. \(S=0t+\frac{1}{2}(9.8) t^2\) \(H_1=4.9t_1^2\) when \(t_2=2t_1\)(i.e. 1s is double 0.5s) \(H_2=4.9t_2^2=4.9(2t_1)^2=4.9(4t_1^2)=4(4.9t_1^2)=4H_1\)
 one year ago
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