Physicshard · Past Paper
A car travels half of the distance at speed v1 and the other half at speed v2. The average speed is:
A(v1 + v2) / 2
B2v1v2 / (v1 + v2)
C√(v1v2)
Dv1v2
✓ Correct Answer: B — 2v1v2 / (v1 + v2)
The average speed for equal distances is the harmonic mean of the speeds.
Share this question
More from Physics
- Negative acceleration is also known as:
- The value of acceleration due to gravity (g) is maximum at:
- An object of mass 5 kg is raised through a height of 10 m. What is the work done? (take g=9.8 m/s^2)
- When a body falls freely towards the earth, its total energy ____.
- Which device is used by bats to navigate and find food?