Saturday

April 19, 2014

April 19, 2014

Posted by **TechnoBoi11** on Thursday, January 25, 2007 at 4:14pm.

What is the speed of the ball as it passes the top of the window?

The equation for the speed of the ball, from time t=0 when the ball is released, is

V = Vo + g t

Vo it the initial velocity of the ball. The distance it has travelled at time t, measured vertically downward, is

Y = Vo t + (1/2) g t^2

You know that Y = 25.2 m at t = 2.

Use that information and the last equation to determine Vo. Then use that Vo in the first equation to get the value of V when t = 2.

- Physics/Science #3 -
**Jordan**, Friday, October 8, 2010 at 9:19pm25.2=Vo(2)+.5(-9.8)(2^2)

25.2=Vo(2)-19.6

25.2+19.6=2Vo

45.1=2Vo

Vo=22.55m/s

**Related Questions**

science - A ball is throen vertically downward from the rop of a 36.6 m tall ...

Physics - A steel ball is dropped from a building's roof and passes a window, ...

physics - A ball is thrown upward off the top of a 30-meter high building. 10 ...

Physics - Ball A is thrown straight down off the top of a tall building with an ...

physics - A ball is thrown upward with an initial velocity of 6.0m/s by someone ...

Physics - Two balls (Ball 1 and Ball 2) are released from the top of a tower. ...

physics - Assume acceleration due to gravity=10 m/s. A ball is thrown ...

Physics - A ball is thrown at an angle of 37.1degrees above the horizontal from ...

general physics - Assume acceleration due to gravity=10 m/s. A ball is thrown ...

calculus - A ball is thrown straight downward from the top of a tall building, ...