In 1980, over San Francisco Bay, a large yo-yo was released from a crane. Suppose the yo-yo was 180 kg, and it consisted of two uniform disks of radius 27.9 cm connected by an axle of radius 2.79 cm. What was the magnitude of the acceleration of the yo-yo during (a) its fall and (b) its rise

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

What is the angular momentum of the bar about the axle?

Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.