A rock takes 3.2 s to hit the ground when it is thrown straight up from...
A rock takes 3.2 s to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8.4 m/s. Calculate the height of the cliff (in meters). Using that information, how long would it take to reach the ground if the rock is thrown straight down with the same speed?
Homework Answers
Use equation of kinematics taking downward direction as positive
to find the required height and time as shown below
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