- #1

- 3

- 0

## Homework Statement

Okay so these are from movies. I am trying to prove them right or wrong using physics. how can I figure out the pounds of force of a vertical jump when I have the:

height of the jump = 6 feet

Time to reach top = .797 sec

Mass of person = 100lbs

2. How can I figure out this problem...

If a baseball is thrown with a velocity of 90mph, and the ball exits the bat at 140mph, what eas the bat speed? Consider the ball was hit with a wood bat. On its most dense part with the barell diameter of 2.5 in, the bat is 30 oz

Friction- how far would a runner slide if he fell on ice after running 15 mph

## Homework Equations

## The Attempt at a Solution

For the first one I messed up somehow using the fact that initial velocity was 0m/s^2 and I got that the force would be only around 50lbs. The number should be in te thousands I'm suspecting. Please help