Physicsmedium · Past Paper
If a body covers 20m in 2nd second and 30m in 3rd second of its motion, what is its acceleration?
A5 m/s^2
B10 m/s^2
C2 m/s^2
D15 m/s^2
✓ Correct Answer: B — 10 m/s^2
Distance in nth sec: Sn = u + a/2(2n-1). S3 - S2 = 10m. Change in distance per sec here is equal to acceleration in uniform case.
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