Observation
Question

A ball is pushed into a block to transfer all of its kinetic energy to move the block. Let's check out how the kinetic energy of the ball is getting affected.

The Scream
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Which of the following will produce maximum increment in the kinetic energy of a car?

Reducing weight to half.
Doubling the mass.
Reducing velocity to half.
Doubling the velocity.

Solution

  • Kinetic energy is directly proportional to mass and the square of velocity.

  • The kinetic energy of the car will increase by doubling the mass and the velocity.

  • However, doubling the velocity will increase the kinetic energy more.


You just explored that the kinetic energy is directly proportional to the mass and the square of the velocity of the object.