Question

The displacement x of a particle along x axis is given by x=3+8t+7t^2. Obtain its velocity and acceleration at t=2seconds.

Answer 1

Please find below the answer

Answer 2

Answer:

v(2)=36, a=14            (CONSTANT)

Explanation:

v=dx/dt = 14t+8

v(2)=14*2+8 = 28+8=36

a= dv/dt = 14