Question

A railway car of mass 20 tonnes moves with an initial speed of 54km/hr. On applying brakes, a constant negative acceleration of 0.3m/s2 is produced.
(i) What is the breaking force acting on the car?
(ii) In what time it will stop?
(iii) What distance will be covered by the car before if finally stops?
CLASS - XI PHYSICS (Laws of Motion)

Answer 1

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