Asked by Anonymous
a cat is thrown up in the air at 12 m/s then free falls down a 70 m high cliff. what is its speed before it hits the ground? what is the cat's time falling before it hits the ground?
vi= 12 m/s change in y = 70 m a= -9.81 m/s^2 vf= ? t=?
vi= 12 m/s change in y = 70 m a= -9.81 m/s^2 vf= ? t=?
Answers
Answered by
oobleck
to find t, find when the height is zero: 70 + 12t - 1/2 at^2 = 0
v = 12 + at
v = 12 + at
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