A car drive accelerates the car to increase its speed from 30 km `h^(-1)` to `60 km h^(-1)` in 5 min. Arrage the following steps a sequence to obtain the acceleration of the car.
(A) Use the formula , rate of change of velocity = `(" Total change in veclocity")/("Total time required for change")`
(B) Obtain the final velocity (v) , of the car.
(C) Find the time taken to increase the speed of the car from u to v let it be 't'
(D) find the initial velocity (u) of the car.
(E) Substitute the values in the formula and calulate the acceleration of the car.

Options

A. EABCD
B. ABCDE
C. DBCAE
D. EDCBA

Answer

C

Explanation

First find the initial velocity and final velocity of the car from given data (D, B). From the problem, find the time taken to increase the velocity ( C). Use the formula acceleration = `("Total change in velocity")/("Total time required for change")` i.e.,
`a=(v-u)/t(A)`.
Substitute the values of u, v, t and attain the value of .a. [E].