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प्रश्न
Kinetic energy = 1/2 × mass × ............
उत्तर
Kinetic energy = 1/2 × mass ×(Velocity)2
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संबंधित प्रश्न
Write an expression for the kinetic energy of an object.
An object of mass, m is moving with a constant velocity, v. How much work should be done on the object in order to bring the object to rest?
State two factors on which the kinetic energy of a moving body depends.
If the speed of a car is halved, how does its kinetic energy change?
Two bodies of equal masses are moving with uniform velocities v and 2v. Find the ratio of their kinetic energies.
Write an expression for the kinetic energy of a body of mass m moving with a velocity v.
On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150 kg, calculate the work done by the brakes. (Neglect air resistance and friction)
A car is accelerated on a levelled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car :
An apple falling from a tree is an example for kinetic energy.
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate:
- the work done by the engine.
- the power of the engine.
