Physicsmedium · Past Paper
A stone is thrown vertically upward with a speed of 49 m/s. How much time does it take to reach maximum height? (g=9.8 m/s^2)
A10 s
B5 s
C2.5 s
D9.8 s
✓ Correct Answer: B — 5 s
v = u - gt => 0 = 49 - 9.8t => t = 49/9.8 = 5s.
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