Posted by **Gina** on Thursday, August 26, 2010 at 9:56pm.

If a ball is dropped from from 288 ft above the ground, how long does it take to reach ground level?

- math -
**MathMate**, Thursday, August 26, 2010 at 10:26pm
The distance S for a free falling object from rest over t seconds is:

S=(1/2)gt²

where

g=9.8 m.s^{-2}

S=288m

Solve for t.

solve for t.

- math -
**Quidditch**, Thursday, August 26, 2010 at 10:53pm
Be cautious about units on this problem. The problem gives the distance in feet. Gravitational acceleration in English units is about 32 ft/sec^2 .

- math -
**MathMate**, Thursday, August 26, 2010 at 11:33pm
Oops. Use g=32.2 f s^{-2}

Thanks Qudditch.

## Answer This Question

## Related Questions

- math - Suppose an object is dropped from a height h0 above the ground. Then its...
- physics - a ball dropped from rest at a height of 50 m above the ground. (a) ...
- Math - Suppose an object is dropped from a height h0 above the ground. Then its ...
- PHYSICS - a ball is dropped from rest at 25m above the ground. how fast is it ...
- Physics - A tennis player hits a ball at ground level, giving it an initial ...
- Physics - A tennis player hits a ball at ground level, giving it an initial ...
- physics - an object of 3 kg is dropped from 2m above the ground. it takes a time...
- Physics - a body is dropped from rest at a heigth of 80m above the ground. (1)...
- Physics - A ball is thrown upwards, from a building. It's height(h), in meters ...
- Physics - A ball is thrown upwards at 15m/s from a window 20 metres above the ...

More Related Questions