(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The fastball of a famous pitcher in the National League has

been clocked in excess of 95 mph. Calculate the work done

by the pitcher in accelerating the ball to that speed. The

mass of a baseball is 0.145 kg.

mass = 0.145 kg

final velocity (in m/s) = 42.4688 m/s

initial velocity = 0 m/s

2. Relevant equations

F = ma

w = F*distance

3. The attempt at a solution

I tried setting up F = ma to find something, but the only known variable is mass. I also tried kinematics, but there are only two known variables that go into the equations and I can't isolate any variables. Is there an equation I'm forgetting, or am I just looking at this problem the wrong way? Thanks.

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# Homework Help: The work done in accelerating a ball to a certain speed

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