Question

A car travelling with a velocity of 30m/s comes to rest in 5s
what is the acceleration of the car​

Answer 1

Explanation:

Acceleration =50−30=6 m/s2

∴ Retardation =6 m/s2

Answer 2

Answer:

$- 6m {s}^{ - 2}$

Explanation:

Given:

v1 = 30m/s

v2 = 0m/s

t = 5s

Since, acceleration = (v2-v1)/t

therefore,

$a = \frac{v2 - v1}{t} \\ a = \frac{0 - 30}{5} \\ a = - 6m {s}^{ - 2}$

Acceleration will be negative as the car comes to rest from a particular velocity.