How much gravitational potential energy does a 100kg (220lb. ) skydiver have if they jump from 4000 meters? *.

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

What determines the amount of inertia an object has

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?