A rock is dropped from the top of a tall building. How high is the building if it takes 3.25seconds for the rock to strike the ground? Ignore the effects of air resistance. A) 169m B)15.9m C)51.8m D) 32.

asked Jun 1, 2020 16.4k views

2 votes

by Fent

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1 vote

Answer:

C)51.8m

Step-by-step explanation:

Kinematics equation:

y=v_(oy)*t+1/2*g*t^2

in this case:

v_(oy)=0

y=1/2*9.81*3.25^2=51.8m

Muruge answered Jun 7, 2020

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