Physicsmedium · Past Paper
A man carries a heavy suitcase on his head and waits for a bus on a horizontal platform. The work done by him is:
APositive
BNegative
CZero
DInfinite
✓ Correct Answer: C — Zero
Since there is no displacement of the suitcase while waiting, the work done (W = F * d) is zero.
Share this question
More from Physics
- The change in direction of a ray of light when it enters from a rarer medium to a denser medium is:
- A person moves 3m North, then 4m East. The average velocity if the trip takes 5s is:
- A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m/s^2 for 8.0 s. How far does the boat travel during this time?
- A convex lens forms a real image of a point object on the principal axis. If the upper half of the lens is painted black:
- Which of these equations is used for distance covered by a body in uniform acceleration?