Asnowmobile has an initial velocity of 3.0 m/s

part 1: if it accelerates at the rate of 0.5 m/s/s for 7.0 sec, what is the final vel.?
part 2: if it accelerates at the rate of -0.60m/s/s, how long will it take to reach a complete stop?

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Why should seat belts not be mandatory quick plz

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack