Posted by **Susan** on Thursday, December 11, 2008 at 5:06pm.

A troll on a 75m tall cliff throws a 35 m/s boulder at 35 degrees above the horizontal at a herd of sheep. What is the time of flight, the range and the maximum height for the boulder?

HOW DO I DO THIS??

- PHYSICS -
**bobpursley**, Thursday, December 11, 2008 at 6:26pm
You know the initial vertical velocity (35sin35).

Vf at top max height is zero. Use

vf=vivertical-gt to to find the time to the top, then use

h=ho+vivert*t-1/2 g t^2 to find the max height.

For time of flight, hf=0

0=ho+vivert*t-gt solve for t

now, having the time of flight, the horizontal distance will be

distance=vihoriz*t

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