Question

7. A car travelling 63 km h-on applying the brakes stopped in 10 sec Calculate its acceleration.​

Answer 1

Answer:

1.75 m/s²

Step-by-step explanation:

Acceleration, a = Velocity/time

Velocity, v = 63km/hr = 63 × (5/18) m/s = 17.5 m/s

Time, t = 10 s

a= v/t = 17.5/ 10 = 1.75 m/s²

Answer 2

Hey friend this is the answer -

Initial velocity = v = 63km/h = 17.5m/s

Final velocity = u = 0m/s

Time = t = 10

Acceleration = $\frac{v - u}{t}$

                     = $\frac{0 - 17.5}{10}$

                     = $\frac{- 17.5}{10}$

                     = -1.75 m/s^2

Hope it will help

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