(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.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Projectile motion- Deriving the right formular

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