What is the work to be done to increase the velocity of a car form `30 km h^-1` to `60 kmh^-1` if the mass of car is 1500 kg?

Find the work done in in reasing the speed of car from 18 kmh^-1 to 36 kmh^-1 . Given, the mass of car is 1000 kg.

Calculate the work required to be done to stop a car of 1500 kg moving at a velocity of 60 k h^-1 .

Calculate the work done by a car against gravity in moving along a straight horizontal road. The mass of the car is 400 kg and the distance moved is 2 m.

A car travels 4 km in 3 minutes. Find the speed of car in cms^-1

A train 100 m long is moving with a velocity of 60 kmh^-1 . Find the time it takes to cross the bridge 1 km long.

A police van moving on a highway with a speed of 30 km h^-1 fires a bullet at a thiefs car speeding away in the same direction with a speed of 192 km h^-1 . If the muzzle speed of the bullet is 150 m s^-1 with what speed does the bullet hit the thiefs car ? (Note: Obtain that speed which is relevant for damaging the thief s car).