Physicsmedium · Past Paper
When the speed of a car is tripled, the distance required to stop it becomes:
A3 times
B6 times
C9 times
DSame
✓ Correct Answer: C — 9 times
Stopping distance is proportional to KE, which is proportional to the square of velocity. 3^2 = 9.
Share this question
More from Physics
- Percentage increase in KE when velocity is increased by 50% is:
- Which of the following is an example of a secondary cell?
- A persistence of sound after the source has stopped, caused by multiple reflections, is known as what?
- Two masses are 10 kg and 20 kg, separated by 2 m. The gravitational force between them is (G is universal constant):
- A motor of 100 W works for 1 minute. How much work does it do?