Question

when a car driver travelling at a speed at a 20m/s applies brakes and brings the car to rest in 20 s then then the retardation will be​

Answer 1

In the given question

u=20m/s

v=0m/s

t=10s

and a=?

we know the formula v =u + at

so putting the values we get

0 = 20 + a X 10

- 20 = 10 a

-2 = a

we get acceleration is -2 so retardation will be +2 m/ sec sq

Answer 2

I think 0.5 is the correct

okay

plz mark brainlist