The distance covered by a car at a time, t is given by x = 20t + 6t4, calculate (i) the instantaneous velocity when t = 1

(ii) the instantaneous acceleration when t =1

(i) v = 44 m/s

(ii) a = 72 m/s^2

Explanation:

You have the following equation for the potion of a car:

(i) The instantaneous velocity is the derivative of x in time:

for t = 1 is:

(ii) The instantaneous acceleration is the derivative of the velocity:

for t = 1

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