Easy homework question

1. Jan 24, 2005

Gilly1998

Killer whales at Sea World routinely jump 6.6 m above the water. What is their speed as they leave the water to achieve this?
____m/s

I dont know what to do.
Thanks in advance to anyone who posts

2. Jan 24, 2005

vincentchan

use the equation
$$v^2 = u^2 + 2 a s$$
look up your textbook if you have no idea what is this formulas about.....

3. Feb 23, 2005

villiami

From launch to when it reaches the top of its motion, (V2)=0 m/s.
So: (V2)^2=(V1)^2 + 2 (acc.) (dist.)
0 = (V1)^2 + 2*(-9.8)*(6.6)
(V1) = 11.37 m/s