Asked by Anonymous
A stone is thrown upward from a bridge at a speed of 10 m/s. It narrowly misses the
bridge on the way back down, and hits the water at 30m/s. what is the approximate height of the bridge?
bridge on the way back down, and hits the water at 30m/s. what is the approximate height of the bridge?
Answers
Answered by
Anonymous
v^2=vo^2+2ad
30^2=10^2+2(-9.8)(d)
900=100+(-19.6)d
800=-19.6d
d=40.8
30^2=10^2+2(-9.8)(d)
900=100+(-19.6)d
800=-19.6d
d=40.8
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