Ajet plane is cruising at 300 m/s when suddenly the pilot turns the engines up to full throttle. after traveling 4.0 km, the jet is moving with a speed of 400 m/s. what is the jet’s acceleration as it speeds up?

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?