A 4.8 kg skateboard and a 68.3 kg rider reach the bottom of a 5.2 m long, 13 degrees hill, where she smoothly grabs her 6-kg bag from the ground. If friction effects can be modeled with a coefficient of 0.125, what is her speed after picking up the bag?

28. a stone is projected at a cliff of height h with an initial speed of 42.0 mls directed at angle θ0 = 60.0° above the horizontal. the stone strikes at a, 5.50 s after launching. find (a) the height h of the cliff, (b) the speed of the stone just before impact at a, and (c) the maximum height h reached above the grou

Observations show that interstellar clouds can have almost any shape and

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.