Physicseasy · Past Paper
A girl carrying a heavy bag on her head stands still for 10 minutes. The work done by her is:
APositive
BNegative
CZero
DMaximum
✓ Correct Answer: C — Zero
Work requires displacement. Since she is standing still, displacement is zero, and thus work done is zero.
Share this question
More from Physics
- A force of 10 N acts on a body of mass 2 kg for 3 seconds. The change in momentum is:
- What is the rate of change of displacement called?
- What is the density of an object that has a mass of 50 kg and a volume of 2 m^3?
- What is the minimum distance required between a source and a reflector to hear a distinct echo in air at 20 degrees Celsius?
- Archimedes' principle is used in designing: