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RRB GROUP D 202527 Nov Shift 1

Question #11993

The motion of a satellite orbiting the Earth in a circular path at constant speed is a classic example of uniform circular motion. What property of this motion prevents its acceleration from being zero?
A
The total mechanical energy is conserved, necessitating acceleration.
B
The direction of motion changes continuously at every point, meaning the velocity is changing.
C
The object's mass continually changes due to orbital dynamics.
D
The speed is too high for the gravitational force to sustain a constant velocity.
Explanation
Velocity is a vector, so continuous change in direction implies constant acceleration.
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Question Snapshot
  • CategoryRRB
  • Exam TypeRRB GROUP D
  • Year2025
  • Question ID#11993
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