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Physics CBSE Live product
Class 9 (2025-26)
Work and energy
Annual Revision I - Work and energy
1.
Centripetal force
Question:
2
m.
Choose the best answer:
1
.
The moon revolved around the earth because the earth exerts a radial force on the moon. Does the earth perform work on the moon?
No
Yes, sometimes
Yes, always
cannot be decided
2
.
Which of the following changes continuously in uniform circular motion?
Speed only
Magnitude of velocity only
Kinetic energy
Direction of velocity only
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