(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Projectile A is launched horizontally at a

speed of 20. meters per second from the top of

a cliff and strikes a level surface below, 3.0 seconds

later. Projectile B is launched horizontally

from the same location at a speed of 30. meters

per second.

Approximately how high is the cliff?

(1) 29 m (3) 60. m

(2) 44 m (4) 104 m

2. Relevant equations

d=tv

3. The attempt at a solution

On two occasions my answer turn out to be '3' and '4'. but the answer key says it's '2'. I have tried for hours but i cant find the right approach. Please offer me a good explanation of how I should work with this? or u can even give me a link to read more or something.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Projectile motion

**Physics Forums | Science Articles, Homework Help, Discussion**