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A car starts from and attains a velocity...

A car starts from and attains a velocity of 54 km ` h^(-1)` if the acceleration of the car is from rest and attains a velcoity of 54 km `h^(-1)` . If the acceleration of the car is ` 3 m s^(-2)`, write the following steps in sequential order to find the time taken to accelerate the car.
(A) Write the relation between u,v,a and t, where t is the time taken to accelerae the car.
(B) Note the final velocity (v) and convert it into SI unit.
(D) substitute the given values and obtain the vlaue of t using ` t= (v-u)/a`

A

ADBC

B

ABCD

C

CADB

D

CBAD

Text Solution

Verified by Experts

The correct Answer is:
D
( C) Note the initial velocity of the car as u = 0 and note down its acceleration.
(B) Note the final velocity (v) and convert it into SI unit.
(A) Write the relation between u, v, a and t, where t is the time taken to accelerate the car.
(D) Substitute the given values and obtain the value of t, using t = `(v-u)/a`.
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