# Calculating Baseball Swing Force

Sammy Sosa swings at a 0.15kg baseball and accelerates it at a rate of 3.0 x10^4 m/s^2. How much force does Sosa exert on the ball?

F=ma

(30000m/s^2)(0.15kg) = 4500 N

Can someone make sense out of these problems? How is it accelerating at that rate? I've seen car crashing problems not even get that much higher force. Sosa can hit a car and get a home run. LOL

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Can anyone explain it? I'm assuming all the problems in the packet come to realistic answers.

Doc Al
Mentor
Can someone make sense out of these problems? How is it accelerating at that rate?
The time of contact of bat with ball is very short--so force and acceleration are high.
I've seen car crashing problems not even get that much higher force. Sosa can hit a car and get a home run.
A car has quite a bit more mass than a baseball. (And is not as bouncy.) Here's another problem...

An ax has a mass of 2.5kg and is swinging at 25m/s.
A man chops a tree and the ax stops at 2.3cm in the tree.

(vf^2 - vi^2)/2d = a

625m/s / 0.046m = 13000m/s^2

F=ma
(13000m/s^2)(2.5kg) = 34000 N

So how is that person so strong? A car can make a much bigger dent to another car than a man can do with a hammer. The force values never make any sense.

Last edited:
D H
Staff Emeritus