Q. 604.5( 4 Votes )

# A car is accelerated on a leveled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car:

A. Does not change

B. Becomes 4 times that of initial kinetic energy

C. Becomes 8 times that of initial kinetic energy

D. Becomes 16 times that of initial kinetic energy

Answer :

In the kinetic energy of the object is proportional to the square of its velocity.

Rate this question :

When a ball is thrown inside a mocking bus, does its kinetic energy depend on the speed of the bus? Explain.

Lakhmir Singh & Manjit Kaur - PhysicsA bullet of mass 15 g has a speed of 400 m/s. What is its kinetic energy? If the bullet strikes a thick target and is brought to rest in 2 cm, calculate the average net force acting on the bullet. What happens to the kinetic energy originally in the bullet?

Lakhmir Singh & Manjit Kaur - PhysicsA car is accelerated on a leveled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car:

A. Does not change

B. Becomes 4 times that of initial kinetic energy

C. Becomes 8 times that of initial kinetic energy

D. Becomes 16 times that of initial kinetic energy

Lakhmir Singh & Manjit Kaur - PhysicsCan any object have momentum even if its mechanical energy is zero? Explain.

NCERT Science - ExemplarWrite true or false for the following statements :

If we know the speed and mass of an object we can find out its kinetic energy.

Evergreen - ScienceWrite true or false for the following statements :

When velocity is halved, its kinetic energy becomes 1/4^{th}.

A 1 kg mass has a kinetic energy of 1 joule when its speed is:

Evergreen - ScienceWhen the speed of a moving object is doubled, its :

Evergreen - Science