Posted by Eva on Thursday, May 1, 2008 at 8:29pm.
A small ball rolls horizontally off the edge of a table that is 1.20 m high. It strikes the floor at a point 1.52 m horizontally from the table edge. How long is the ball in the air? What is the velocity of the ball when it hits the floor?

Physics  bobpursley, Thursday, May 1, 2008 at 8:33pm
It fell 1.20m.
1.20= 1/2 g time^2 solve for time in air.
Velocity? Its intial horizontal veloicty must have been 1.52/timeinair.
So, take the falling final velocity (v= g t), add it to the horizontal velocity as a vector at 90 degrees, and you have the velocity at the floor.

Physics  bobpursley, Friday, May 2, 2008 at 6:34am
g= 9.8m/s^2

Physics  help me D:, Thursday, September 27, 2012 at 7:26pm
How do you get rid of t^2

Physics  :), Thursday, September 27, 2012 at 9:58pm
Square root.

Physics  milkias, Friday, January 20, 2017 at 12:23am
a ball rolls off an 80cm high table & lands 1.2m a long the floor (g=10m/s.s) find total time?
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