Tuesday

October 21, 2014

October 21, 2014

Posted by **Brianna** on Sunday, November 14, 2010 at 12:03pm.

a) At what speed was the stone thrown? (20.6) <- i got that right.

b) How high did the stone go? (21.6 m)

i don't know how to get b. what steps do i do?

- Physics - Free Fall -
**MathMate**, Sunday, November 14, 2010 at 2:31pmThe stone with an initial velocity, v, has a kinetic energy of (1/2)mv².

When at the top, velocity = 0, but the potential energy is mgh.

So equate energies to get

mgh = (1/2)mv²

Solve for h.

**Answer this Question**

**Related Questions**

Physics - A stone is thrown from the edge of a cliff into the ocean below. It is...

Physics - A stone is thrown from the edge of a cliff into the ocean below. It is...

Physics - A stone is thrown up vertically from the ground (the gravitational ...

physics - In the problem, please assume the free-fall acceleration g = 9.80 m/s2...

physics - A stone with mass m = 2.3 kg is thrown vertically upward into the air ...

Physics - A stone is thrown vertically upward at 15 m/s. Neglect friction due to...

physics - In the problem, please assume the free-fall acceleration g = 9.80 m/...

physic - A girl throws a stone from a bridge. Consider the following ways she ...

Physics - A stone is thrown from a 50m high cliff and lands 5 seconds later, 40m...

Physics - Two stones are thrown vertically upward from the ground, one with ...