Question

a body starts from origin and moves along x axis such that at any instant velocity is v at any time t is 4t ^3-2t where t is in second and v at t is in m/s^1.the acceleration of the particle when it is 2m from the originis

Answer 1

a = dv/dt

a = d(4t^3 -2t)/dt

a = 12t^2 -2

t = 2

a = 12×4 - 2

a = 46 m/s^2

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