Physicshard · Past Paper
A body covers 200 cm in first 2s and 220 cm in next 4s. What is the velocity at the end of 7s?
A10 cm/s
B20 cm/s
C5 cm/s
D15 cm/s
✓ Correct Answer: A — 10 cm/s
Set up two equations with s = ut + 0.5at^2 to find u and a, then find v = u + at.
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