Kinetic energy is directly proportional to the square of the velocity (KE ∝ v²). If the velocity is multiplied by a factor 'x', the kinetic energy is multiplied by a factor of 'x²'.
When velocity is doubled, kinetic energy becomes :
Asked in lower devision clerk 2025 · Topic: Mechanics (Work, Energy, and Power)
More Physics questions
- The law of conservation of energy says
- Which one of the following statements is not correct for a freely falling object?
- An iron ball and a wooden ball of the same radius are released from a height 'H' in vacuum. The time taken to reach the ground will be-
- An astronaut drops a hammer and a feather on the moon. What will happen?
- A stone of mass 1 kg and initially at rest is dropped from a tower of height 40 m. When it reaches a height of 10 m from the ground level, what will be the values of its potential energy (PE) and kinetic energy (KE)? (Acceleration due to gravity is 10 m/s²)
- A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would
- A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energy when it is dropped from the balloon are respectively (acceleration due to gravity = 9.8 m/s²)
- There is a ball of mass 320 g. It has 625 J potential energy when released freely from a height. The speed with which it will hit the ground is