# Speed of a Projected Stone

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A stone is projected at a cliff of height h with an initial speed of 40.0 m/s, directed 60.0Â° above the horizontal. The stone hits the top of the cliff 6.10 s after it is launched. Calculate:

a. the maximum altitude of the stone.

b. the height of the cliff.

c. the stone's speed just before impact.

Â© BrainMass Inc. brainmass.com March 5, 2021, 12:07 am ad1c9bdddfhttps://brainmass.com/physics/work/speed-projected-stone-483380

#### Solution Preview

Hi there,

Thanks for letting me work on your question. Here is my answer:

Horizontal speed: Vx=V*cos(60)=40*1/2=20m/s, it will remain ...

#### Solution Summary

The speed of a project stone is determined when the height of the cliff is given.

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