Register to reply

Average force applied by baseball on glove

by balletgirl
Tags: applied, average, baseball, force, glove
Share this thread:
balletgirl
#1
Nov1-09, 08:58 PM
P: 36
1. The problem statement, all variables and given/known data
A 0.140-kg baseball traveling 45.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 11.0 cm. What was the average force applied by the ball on the glove?


2. Relevant equations

F=ma ?

3. The attempt at a solution

It is the whole "backward 11.0 cm" part that confuses me.
Phys.Org News Partner Science news on Phys.org
Scientists develop 'electronic nose' for rapid detection of C. diff infection
Why plants in the office make us more productive
Tesla Motors dealing as states play factory poker
JDHalfrack
#2
Nov1-09, 09:17 PM
P: 19
Clearly, the question is how can you find acceleration?

Hint: if the ball is initially travelling at 45 m/s, and the ball comes to rest after 11 cm, what equation can you use to find acceleration?
balletgirl
#3
Nov1-09, 10:03 PM
P: 36
Okay, so I used the equation vf^2=vi^2-2ad.
0= 45^2 - 2*a*.11m
I ended up with 9205 m/s/s as the acceleration.

After plugging it in to F=ma, I got 1,289N as the force. It seems too high.
Thanks by the way.

JDHalfrack
#4
Nov2-09, 06:01 AM
P: 19
Average force applied by baseball on glove

I got 1,289N as the force. It seems too high.
Excellent. That's what I got too. And, think about it. A baseball travelling 45 m/s comes to rest in only 11 cm! It takes a tremendous amount of force to stop it!


Register to reply

Related Discussions
Average force in baseball help? Introductory Physics Homework 1
Average Force Applied by Catcher Introductory Physics Homework 9
Free body diagram involving normal force, gravitational force, and applied force. Introductory Physics Homework 4
Force of a Baseball Swing Introductory Physics Homework 11
Average Force question (baseball, glove, bat) Introductory Physics Homework 1