Physicshard · Past Paper

If a body starts from rest and travels 120m in the 8th second, what is its acceleration?

A16 m/s^2
B10 m/s^2
C15 m/s^2
D20 m/s^2

✓ Correct Answer: A — 16 m/s^2

S_n = u + a/2(2n-1) => 120 = 0 + a/2(16-1) => 120 = 7.5a => a = 16 m/s^2.

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