In a world cup soccer match, juan is running due north toward the goal with a speed of 7.60 m/s relative to the ground. a teammate passes the ball to him. the ball has a speed of 12.9 m/s and is moving in a direction of 31.4° east of north, relative to the ground. a. what is the magnitude of the ball's velocity relative to juan? b. what is the direction of the ball's velocity relative to juan?

Plzz worth 10 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

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?