The cart has a velocity vc = 2.5 ft/sec to the right. determine the angular speed n (positive if counterclockwise, negative if clockwise) of the wheel so that point a on the top of the rim has a velocity
(a) equal to 2.5 ft/sec to the left,
(b) equal to zero, and
(c) equal to 5.0 ft/sec to the right.

Ajoint produces movement when its angle decreases. which type of movement is it?

One hazard of space travel is debris left by previous missions. there are several thousand masses large enough to detect by radar orbiting the earth, but there are far greater numbers of very small masses such as flakes of paint. calculate the force exerted by a 0.110 mg chip of paint that strikes a space shuttle window at a relative speed of 5.00 ✕ 103 m/s and sticks, given the collision lasts 6.00 ✕ 10-8 s. such a collision chipped the window of the ill-fated challenger in june 1983, causing $50,000 of damage.

I’ve been stuck on this for a while