Posted by **Sierra** on Wednesday, June 20, 2012 at 11:18pm.

A quarterback is asked to throw a football to a receiver that is 32.6 m away. What is the minimum speed that the football must have when it leaves the quarterback's hand? Ignore air resistance. Assume the ball is caught at the same height as it is thrown.

- Physics -
**drwls**, Thursday, June 21, 2012 at 5:14am
The formula you need to use for the distance R of the pass, which is easily derived, is

R = 32.6 = (Vo^2/g)*sin(2A)

Vo is the velocity at which the ball is thrown

For the minimum required speed, make A = 45 degrees, so that 2A = 90 degrees.

32.6 = Vo^2/g

Vo = 17.9 m/s

- Physics -
**Elena**, Thursday, June 21, 2012 at 5:16am
L=vₒ²•sin2α/g,

vₒ =sqrt(L•g/sin2α)

min vₒ at sin2α = 1

vₒ =sqrt(L•g) = sqrt(32.6•9.8) =17.87 m/s

## Answer this Question

## Related Questions

- physics - A quarterback is asked to throw a football to a receiver that is 32.1 ...
- physics - PLEASE I HAVE NO IDEA WHERE TO START A quarterback is asked to throw a...
- physics - A quarterback is asked to throw a football to a receiver that is 32.1 ...
- AP Physics - A quarterback throws the football to a stationary receiver who is ...
- physics - A quarterback throws the football to a stationary receiver who is 16 m...
- physics - A quarterback throws the football to a stationary receiver who is 18.3...
- physics - A quarterback throws the football to a stationary receiver who is 22....
- physics - A quarterback throws a football toward a receiver with an initial ...
- physics - a football is thrown to a moving receiver .the football leaves the ...
- physics - a football is thrown to a moving receiver .the football leaves the ...

More Related Questions