Wednesday

August 20, 2014

August 20, 2014

Posted by **Ronald** on Monday, September 19, 2011 at 11:55pm.

What is the initial speed of the ball?

Answer in units of m/s

- Physics -
**drwls**, Tuesday, September 20, 2011 at 4:18amYou need to solve two simultaneous equations for the time of flight (T) and initial velocity, Vo.

Vo cos40 T = 117 meters

or

Vo*T = 152.7 m,

and

2 + Vo sin40 T- (g/2) T^2 = 30 meters

or

0.6428 Vo*T - 4.9 T^2 = 28

Solve for T first, then Vo

98.17 -4.9 T^2 = 28

T = 3.99 s

etc.

**Related Questions**

AP Physics - A home run is hit such a way that the baseball just clears a wall ...

physics - A home run is hit in such a way that the baseball just clears a wall ...

Physics - A home run is hit such a way that the baseball just clears a wall 19 m...

Physics - A ball player hits a home run, and the baseball just clears a wall 20...

Physics - A ball player hits a home run, and the baseball just clears a wall 17...

Physics - A ball player hits a home run, and the baseball just clears a wall 17....

physics - A ball player hits a home run, and the baseball just clears a wall 17....

Physics- Mechaincs - A home run is hit such a way that the baseball just clears ...

physics - A baseball player hits a home run over the left-field fence, which is ...

Physics - A baseball player hits a home run that just barely clears the 12m high...