Killer whales at sea world routinely jump 7.0 m above the water. what is their speed as they leave the water to achieve this? m/s

You need the kinematic equation below:



re-arrange to get the velocities on one side:



Then simplify things to make it easier to see. Since v2 = 0 because the whale is not moving once it reaches 7 meters, and we need to find v1 from v1^2, we can write the equation like this:

   Where a = acceleration due to gravity = 9.8m/s^{2}