Physicshard · Past Paper
The velocity of a particle at any time t is given by v = 2t(3-t). At what time is the velocity maximum?
A1 s
B1.5 s
C3 s
D0 s
✓ Correct Answer: B — 1.5 s
v = 6t - 2t^2. For max velocity, dv/dt = 0. 6 - 4t = 0 => t = 1.5s.
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