Posted by **Johnathon** on Tuesday, February 15, 2011 at 11:02pm.

A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and is popped straight up to a height of 43 m. If the contact time between the bat and the ball is 2.35 ms, calculate the average force [exerted by the bat on the ball] during contact. [Let the positive axis lie along the line from the batter to the pitcher, with the batter at the origin.] Please give magnitude and direction.

- physics for scientists and engeneers I -
**Helper**, Tuesday, February 15, 2011 at 11:07pm
assuming the 27 was really horizontal, then the change in velocity has to be determined.

To get 43m high (that is pretty high)...

1/2 m vi^2=mg(43)

vi=sqrt (86*9.8)

change momentum=massball*deltaV

ok,to get deltaV, deltaV=sqrt(86*9.8) j +27i)

then force= changemometum/time

you get direction from the velocity coordinates.

- physics for scientists and engeneers I -
**needhelp**, Wednesday, April 10, 2013 at 9:48pm
im so lost that its not even funny... idk what im doing and it wouldve been better if this person wouldve used numbers instead of letters =(

## Answer This Question

## Related Questions

- physics - A 0.145-kg baseball pitched horizontally at 27 m/s strikes a bat and ...
- physics-momentum - A 0.145-kg baseball pitched horizontally at 39 m/s strikes a ...
- physics - A 0.145 kg baseball pitched at 35.0 m/s is hit on a horizontal line ...
- Physics - A 0.145 kg baseball pitched at 37.5 m/s is hit on a horizontal line ...
- Physics - A 0.145 kg baseball pitched at 38.0 m/s is hit on a horizontal line ...
- physicss - A 0.145 kg baseball pitched at 44.0 m/s is hit on a horizontal line ...
- Physics - A 0.145 kg baseball pitched at 39.9 m/s is hit on a horizontal line ...
- Physics - I got all but this problem. A 0.145-kg baseball is pitched at 42.0 m/...
- physics - A baseball (m = 148 g) approaches a bat horizontally at a speed of 43....
- Physics - A bat strikes a 0.145-kg baseball. Just before impact, the ball is ...

More Related Questions