HELP PLEASE !! During the filming of a motion picture, a stuntman is driving a motorcycle on top of a train while the train is moving. The train is moving east at 11.3 m/s relative to the ground. If the motorcycle is moving west at 17.3 m/s relative to the train, what is the velocity of the motorcycle relative to the ground? Assume east is positive.

Hint: Use vector addition and draw a picture!

Which statement correctly describes the relationship between frequency and wavelength?

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.