Question #351009

a ball is thrown horizontally with an initial speed of 10ms from an 80 m cliff.how long does it take to reach the ground?

1
Expert's answer
2022-06-17T08:14:50-0400

Given:

h=80mh=80\:\rm m

g=9.8m/s2g=9.8\:\rm m/s^2

v0=10m/sv_0=10\:\rm m/s


The time of motion is equal to the time of free falling:

t=2hg=2809.8=4.0st=\sqrt{\frac{2h}{g}}=\sqrt{\frac{2*80}{9.8}}=4.0\:\rm s


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