Two cars intially at rest are free to move in the `x` direction. Car `A` has mass 4 kg and car `B` has mass 2kg. They are tied together, compressing a spring in between them. When the string holding them together is burned, car `A` moves off with a speed of `2//s`
(a) with what speed does car `B` leave.
(b) how much energy was stored in the spring before the string was burned.

Two carts,initially at rest,are free to move on a horizontal plane. Cart A has mass 4.52 kg and cart B has a mass 2.37kg. They aretied together, compressing a light spring in between them. When the string holding them together is burned, the cart A moves off with a speed of 2.11 m/s.(a) With what speed does cart B leave ? (b) How much energy was stored in the spring before the string was burned ?

A car moves from A to B with a speed of 30 kmph and from B to A with a speed of 20 kmph. What is the average speed of the car ?

A car is moving with a speed of 54 km//h . What will be the kinetic energy of the boy of mass 40 kg sitting in the car ?

A car moves with constant speed of 10 m/s in a circular path of radius 10m. The mass of the car is 1000 kg. How much is the required centripetal force for the car?

A car moves with constant speed of 10 m/s in a circular path of radius 10m. The mass of the car is 1000 kg. How much is the required centripetal force for the car?