Homework Help: physics

Posted by john on Friday, November 26, 2010 at 8:37pm.

An autographed baseball rolls off of a 1.3 m high desk and strikes the floor 0.74 m away from the desk. The acceleration of gravity is 9.81 m/s2 .
How fast was it rolling on the desk before it fell off?

physics - drwls, Friday, November 26, 2010 at 10:22pm
Calculate the time it takes to fall H = 1.3 m.

t = sqrt (2H/g) = 0.515 s

Vx = 0.74 m/0.515s = ___

Vx does not change as the ball falls to the floor
physics - norma, Sunday, October 23, 2011 at 6:00pm
1.44

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