Posted by **katie** on Friday, May 23, 2014 at 4:18pm.

A rock tumbles straight down from a cliff, its moving at 20 m/s when it hits. What is the height of the cliff? The mass of the rock is 8 kg.

a) 2.5 m

b) 400 m

C) 20.4 m

d) 160 m

## Answer This Question

## Related Questions

- Physics - A boy kicks a rock off a cliff with a speed of 19.4 m/s at an angle of...
- physics - c) A 0.26-kg rock is thrown vertically upward from the top of a cliff ...
- Physics - A boy kicks a rock off a cliff with a speed of 15.5m/s at an angle of ...
- Math - For this problem, a person standing on the edge of a cliff throws a rock ...
- Science - A rock is held steady over a cliff and dropped. 1.1 seconds later, ...
- physics - A 0.26 kg rock is thrown vertically upward from the top of a cliff ...
- physics..help PLEASE! - A 0.26 kg rock is thrown vertically upward from the top ...
- PHYSICS - A 0.26kg- rock is thrown vertically upward from the top of a cliff ...
- pre calc - A rock is dropped form the top of a cliff. It takes 12 seconds to hit...
- Physics - A 0.26-kg rock is thrown vertically upward from the top of a cliff ...

More Related Questions