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A 3.00kg ball is dropped from rest from the roof of a building 176.4m high. While the ball is falling, a horizontal wind exerts a constant force of 12.0N on the wall. How long does the ball take to hit the ground?

2007-10-16 17:12:01 · 2 answers · asked by jalisamarie12 1 in Science & Mathematics Physics

2 answers

So you say that "a horizontal wind exerts a constant force of 12.0N on the wall" Gee, what a puny little wind. Does it exert any force at all on the ball?

t=sqrt(2h/g)
t=sqrt(2 x 176.4 / 9.81)
t=6.0 sec

2007-10-16 22:45:06 · answer #1 · answered by Edward 7 · 0 0

The horizontal acceleration of the ball has no effect on its vertical motion. So you can ignore the mass and the wind force.
So just use a kinematic equation s=ut+½at²

2007-10-17 05:42:31 · answer #2 · answered by Anonymous · 0 0

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