A ball on a string is moving in a horizontal circle. The Radius is 2.5 meters and the velocity of the ball is 3.5m/s. The tension in the string is 5.5 N. What is the mass of the ball?

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

It is really hard for me right know

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.