A particle moves on the x-axis with x = 5t³ - 4t² + 2t metres. Find its velocity at t = 2 s.
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A particle moves on the x-axis with x = 5t³ − 4t² + 2t metres. Find its velocity at t = 2 s.

G1 Physics · Accepted Answer

Velocity is the rate of change of position: v = dx/dt = 15t² − 8t + 2 At t = 2 s: v = 60 − 16 + 2 = 46 m s⁻¹.