A truck moving at `15m//s` has KE of `4.2xx10^5` J (a) what is the mass of the truck ? (b) By what multiplicative factor does the kinetic energy of the truck increases if its speed is doubled?

Suppose a car has 4000 J of kinetic energy. What will be its kinetic energy if the speed is doubled? What if the speed is tripled?

A car and a truck are moving with the same speed of 12ms^(-1) . If their masses are in the ratio 1:5 , find the ratio of their kinetic energy.

Find the mass of the body which has 5J of kinetic energy while moving at a speed of 2m//s.

An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.2 m//s^2 and the automobile has an acceleration of 3.5 m//s^2 . The automobile overtakes the truck when it (truck) has moved 60 m. (a) How much time does it take the automobile to overtake the truck ? (b) How far was the automobile behind the truck initially ? (c) What is the speed of each during overtaking ?

An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.2 m//s^2 and the automobile has an acceleration of 3.5 m//s^2 . The automobile overtakes the truck when it (truck) has moved 60 m. (a) How much time does it take the automobile to overtake the truck ? (b) How far was the automobile behind the truck initially ? (c) What is the speed of each during overtaking ?

Find the mass of a body which has 5 J of kinetic energy while moving at a speed of 2 m/s.

A person is standing on a truck moving with a constant velocity of 14.7 m/s o a hrozontal road. The man throws a ball in such a way that it returns to the truck after the truck has moved 58.8 m. Find the speed and the angle of projection. a. as seen from the truck b. as seen fromt the road.

A person is standing on a truck moving with a constant velocity of 14.7 m/s o a hrozontal road. The man throws a ball in such a way that it returns to the truck after the truck has moved 58.8 m. Find the speed and the angle of projection. a. as seen from the truck b. as seen fromt the road.