Physicshard · Past Paper
A body moves with constant acceleration 'a'. If its velocity at two points is 'u' and 'v', its velocity at the midpoint of the path is:
A(u+v)/2
Bsqrt((u^2 + v^2)/2)
Csqrt(uv)
D(v-u)/2
✓ Correct Answer: B — sqrt((u^2 + v^2)/2)
Using v^2 = u^2 + 2as, the velocity at the spatial midpoint involves the root-mean-square of the speeds.
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