Physics, asked by zohabubere, 3 months ago

When a car driver travelling at a speed of 40 m/s applies brakes and brings the car to rest in 10 s, then the acceleration will be

Answers

Answered by BrainlyArnab
1

"

- 4 m/s²

Explanation:

Given -

A car driver travelling at a speed 40 m/s applies brakes and brings the car to rest in 10 s, then the acceleration will be

Solution -

Here,

initial speed (u) = 40 m/s

final speed (v) = 0 m/s (rest)

Time taken for acceleration (t) = 10 s

acceleration = (v - u)/t

= (0-40)/10 m/

= -40/10 m/

= -4 m/

Hence the acceleration is - 4 m/.

Negative acceleration is called retardation, so we can say that it is retardation of 4 m/.

hope it helps.

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