How High Can a Salmon Jump if It Leaps at 2.5 Meters Per Second?

[mandaa123]

Homework Statement

If a salmon swims straight upward in the water fast enough to break through the surface at a speed of 2.5 meters per second, how high can it jump above water?

Homework Equations

i don't know, because all i know is speed.

The Attempt at a Solution

is acceleration 9.81 in this? i don't know how to figure it out : [

 

[AshesToFeonix]

the formulas you need are:

V final = V initial + A(t)

and

X final = X initial + V initial (t) + 1/2A(t^2)

where x is distance, v is velocity and a is acceleration (yes, 9.81 m/s^2)

write'em down, I'm sure they're in your book, and should get you started on all your problems.

 

[Borek]

You may as well approach the question from the conservation of energy side. Kinetic energy gest converted into potential during flight.