Physicseasy · Past Paper
When velocity of a body is halved, its KE becomes:
AHalf
BDouble
COne-fourth
DFour times
✓ Correct Answer: C — One-fourth
KE is proportional to v^2. If velocity is (1/2)v, KE becomes (1/2)^2 = 1/4 of the original.
Share this question
More from Physics
- Which law is used to explain the recoil of a gun?
- A car moving at 40 km/h can be stopped by brakes in 2m. If the same car moves at 80 km/h, the stopping distance is:
- When the speed of a moving body is doubled, its momentum is:
- A hydraulic lift has pistons of radii 1cm and 10cm. What is the force multiplier?
- Which of the following produces a DC current?