February 20, 2017

Homework Help: physics

Posted by ruby on Monday, July 21, 2008 at 8:52pm.

-Suppose that a person is standing on the edge of a cliff 50 m high, so that the ball in his/her hand can fall to the base of the cliff.

(a)-How long does it take to reach the base of the cliff?
(b)- What is the total distance traveled by the ball?

Attempted Answers
(a) I got 40.2 s because I divided the total distance the ball covered (50 m) by the pull of gravity on the object, -9.8 m/s. However I feel like my answer is wrong, can someone please correct this for me.

(b) The total distance traveled by the ball would remain to be -50 m because the ball was dropped down a cliff 50 m high, and there was no going up or down involved. I- think- this one is right

*** Also, i attempted to solve these questions mentally, however i don't know how to solve them step by step using equations, so can some one please demonnstrate this for me? Thanks for all the help. =)

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