Monday

March 2, 2015

March 2, 2015

Posted by **Keith** on Tuesday, January 25, 2011 at 4:21pm.

how long will it take the ball to reach the ground? and what will its speed be when it strikes the ground

- physics -
**bobpursley**, Tuesday, January 25, 2011 at 4:27pmwhen at the top, vertical velocity is zero

vf=0=vi+gt solve for t, time to top.

How long it will take to get to the ground?

Hf=Hi+vi*t-1/2 g t^2 hi=20, hf=0, solve for t to get time in the air.

**Answer this Question**

**Related Questions**

physics, please help me, this question is hard - John Stands at the edge of a ...

physics - A 3.00 kg ball is dropped from the roof of a building 176.4 m high. ...

physics - a ball is dropped off a 20m high building, the ball weights 5 g. how ...

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

physics - A ball is thrown vertically up from the edge of a 150 m building with ...

Physics - A ball is thrown upwards, from a building. It's height(h), in meters ...

11 Physics - my teacher gave me this question for review and i don't know how to...

Physics - A 2.98 kg ball is dropped from the roof of a building 158.3 m high. ...

Physics please help!!!!!!! - A ball is thrown vertically upward (assumed to be ...

physics - HELP ASAP! - A 3.60 kg ball is dropped from the roof of a building 184...