Posted by Sioraf on Sunday, April 11, 2010 at 2:09pm.
A baseball thrown at 25.0m/s strikes a catcher's mitt and slows down to rest in 0.500 s. What is the magnitude of the ball's acceleration?
I'm having trouble finding the process of figuring out this question. Help?

Physics  drwls, Sunday, April 11, 2010 at 2:13pm
All you need to answer this is the DEFINITION of acceleration.
The acceleration is the speed change divided by the time. In this case, it is a negative number because the speed is decreasing.
a = (0  25.0)m/s /0.500 s = ___ m/s^2

Physics  Sioraf, Sunday, April 11, 2010 at 2:25pm
So you just make the deacceleration the time?

Physics  bobpursley, Sunday, April 11, 2010 at 2:29pm
Huh? a= 25/.5=50m/s^2

Physics  Damon, Sunday, April 11, 2010 at 2:30pm
(CHANGE IN VELOCITY} /TIME
as he said
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