Question

Raju is travelling in a train moving at a speed of 72 km/hr In order to stop the train the train the driver decrease in speed. The rate of decrease in speed of the moving body is known as deceleration. If the deceleration of the train is 10 m/ sec sec how much time will it take to come to a stop​

Answer 1

Answer:2second

Explanation:intial velocity =72km/hr

1km /hr=5/18m/s

72km/hr=72*5/18=20m/s

Final velocity =0

Then V=U+gT

0=20+(-10)T

T=20/10=2sec

Thus it will stop after 2 sec