EasyPhysics1Units and Measurements, Mathematical Tools
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Velocity of a particle is given as v = 2t² − 3 m/s. The acceleration of particle at t = 3 s will be
A
18 ms⁻²
B
12 ms⁻²
C
15 ms⁻²
D
zero
Explanation
Acceleration is the derivative of velocity with respect to time. v = 2t² − 3, a = dv/dt = 4t At t = 3 s, a = 4 × 3 = 12 ms⁻².
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