Saturday

December 20, 2014

December 20, 2014

Posted by **divya** on Wednesday, July 27, 2011 at 9:04pm.

- physics -
**drwls**, Thursday, July 28, 2011 at 4:16amThe kinetic energy of the ball when thrown must equal the potential energy it must gain to reach the top.

(1/2) M V^2 = M g H

V = sqrt(2 g H) = 99 m/s = 221 mph

That building is higher than the Empire State Building.

No one can throw a ball that fast. The best fast ball pitchers throw baseballs at 100 mph

**Answer this Question**

**Related Questions**

science - A boy standing on top a building with a height of 500m throws a ball ...

physics - A boy standing in a ditch throws a baseball upward toward his father. ...

Physics - Two boys standing on carts that move along a horizontal frictionless ...

physics - A boy 14.0m above the ground in a tree throws a ball for his dog, who ...

Physics - A boy is standing on a skateboard holding two 5.0 kg bowling balls. ...

physics - A boy standing on top of a building throws a small ball from a height ...

physics - a boy who is 1.5m tall throws a ball into the air the ball attains a ...

Physics - A boy starts at rest and slides down a frictionless slide as in the ...

Physics - A boy throws a ball with an initial speed of 40.0 m/s. The angle of ...

Physics - A ball bounces vertically on the ground after being thrown vertically ...