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A local train, travelling at 72 km/hr is...

A local train, travelling at 72 km/hr is brought to rest in 10 seconds by applying the brake. How much is the acceleration produced in this case? Also how much is distance (s) covered by the train before coming to rest?

A

`a=2 m/s^2, s=300m`

B

`a=-2 m/s^2, s=300m`

C

`a=2 m/s^2, s=100m`

D

`a=-2 m/s^2, s=100m`

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