Posted by **Pat** on Monday, June 28, 2010 at 10:26pm.

A football player punts the football so that it will have a hang time of 4.5s and land 46m away. If the ball leaves the player's foot 1.5m above the ground, what must be (a) the magnitude and (b) angle (relative to the horizontal) of the ball's initial velocity?

- Physics -
**bobpursley**, Monday, June 28, 2010 at 11:45pm
heightfinal=heightinitial+vi*sinTheta*t-4.9t^2

0=1.5+vi*sinTheta*4.5-4.9*4.5^2

that is the first equation, solve for vi in terms of all else.

46=vi*cosTheta*4.5

put the Vi you got above, put it in, and solve for theta (you should have a tanTheta=xxxx)

- Physics -
**Anonymous**, Monday, October 5, 2015 at 9:05pm
0.393396838

## Answer This Question

## Related Questions

- math - Please explain in detail so I can understand how to do it: A football ...
- Math - We are studying Quadratic formula: A football player punts a ball. The ...
- physics - player kicks football from ground level with velocity of32 m/s at an ...
- physics - A football, if it was kicked when initially at rest, is inflated such ...
- Physics - A 69.5kg football player is gliding across very smooth ice at 2.15m/s...
- Physics - A 69.5kg football player is gliding across very smooth ice at 2.15m/s...
- Physics - A 69.5kg football player is gliding across very smooth ice at 2.15m/s...
- physics - A 70.5kg football player is gliding across very smooth ice at 2.05m/s...
- Physics - Baseball player A bunts the ball by hitting it in such a way that it ...
- physics - The punter on a football team tries to kick a football so that it ...

More Related Questions