Physicsmedium · Past Paper
An athlete runs on a circular track of radius R. What is his distance and displacement after 1.5 rounds?
A3*pi*R, 2R
B2*pi*R, R
Cpi*R, 2R
D3*pi*R, zero
✓ Correct Answer: A — 3*pi*R, 2R
Distance = 1.5 * circumference = 1.5 * 2*pi*R = 3*pi*R. After 1.5 rounds, he is at the opposite end of the diameter, so displacement = 2R.
Share this question
More from Physics
- What is the work done by a person who holds a 10 kg weight at a height of 2 m for 5 minutes?
- In a step-up transformer, the current in the secondary coil compared to the primary coil is:
- In a distance-time graph, a straight line parallel to the time axis indicates:
- The phenomenon of bending of light when it passes from one medium to another is called:
- Which of these quantities can be zero for a moving body?