Homework Help: physics

Posted by Ja'Terra on Tuesday, September 20, 2011 at 9:42am.

A ball is projected horizontally from the edge
of a table that is 1.2 m high, and it strikes the
floor at a point 1.11 m from the base of the
table.
The acceleration of gravity is 9.8 m/s2 .
What is the initial speed of the ball?
Answer in units of m/s

physics - drwls, Tuesday, September 20, 2011 at 9:48am
Using the height H of the table, compute the time t required to hit the ground.

t = sqrt(2H/g)= 0.495 s

Initial speed =
= horizontal V component = (1.11 m)/t

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