A stone is projected vertically upward with speed

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A stone is projected vertically upward with speed u=12 m/su = 12\,\text{m/s}. Taking upward direction as positive, what is its acceleration 0.50 s0.50\,\text{s} after release? (Take g=9.8 m/s2g = 9.8\,\text{m/s}^2.) (a) 00 (b) +9.8 m/s2+9.8\,\text{m/s}^2 (c) −9.8 m/s2-9.8\,\text{m/s}^2 (d) −4.9 m/s2-4.9\,\text{m/s}^2

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