You push an 8.0-kg box 2.0 meters on a frictionless surface with a force of 35 N, increasing its speed as you push. A) How much work do you do on the box?

B)How much work does normal force do on the box?

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.