The temperature of a piece of copper with a mass of 95.4g increases from 298.0K to 321.1K when the metal absorbs 849J of energy as heat. What is the specific heat of copper

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.