Thursday

October 23, 2014

October 23, 2014

Posted by **Dave** on Tuesday, July 10, 2012 at 8:41pm.

-10.0 meters/second and a height of 1,000 meters. How long did it take the ball to reach the surface of Earth? Given: g = -9.8 meters/second2.

- physics -
**bobpursley**, Tuesday, July 10, 2012 at 9:00pmhf=hi+vi*t+1/2 a t^2

0=1000-10t-4.9t^2

solve the quadratic

t=(-10+-sqrt(100+19600))/-9.8

t=-150/-9.8=15.3sec

check that.

**Answer this Question**

**Related Questions**

physics - A ball is released from a hot air balloon moving downward with a ...

physics - A ball is released from a hot air balloon moving downward with a ...

physics - A ball is released from a hot air balloon moving downward with a ...

physics - A bicyclist moving at a constant speed takes 10.0 seconds to travel ...

physics - a hot-air balloon having initial velocity vi as it ascends. Then, a ...

physics - A ball is released from a tower at a height of 100 meters toward the ...

physics - A ball is released from a tower at a height of 100 meters toward the ...

Physics - A ball is ejected to the right with an unknown horizontal velocity ...

Math - The height(h) of an object that has been dropped or thrown in the air is...

Physics - A ball with a mass of 0.50 kilograms is moving at a speed of 1.8 ...