Physics, asked by riddhi2402, 8 months ago

brakes are applied to a train travelling at 72 kilometre per hour after going to hundred metre its velocity reduces to 36 kilometre per hour at the same rate of retardation how much further will it go before coming to rest...
please send detailed explanation...i will follow u and mark the Brainliest answer...hurry up!!​

Answers

Answered by Anonymous
0

Answer:

20 metres

Explanation:

Initial velocity = 72 km/hr = 20 m/sec

Final velocity = 0 m/sec (because train is coming to a rest)

Acceleration = -36 km/hr = -10 m/sec

Applying the third equation of motion,

v²-u² = 2as

0-20² = 2 (-10) (s)

-400 = -20s

s = 20 metres

Hence the train will cover 20 metres before coming to a rest.

HOPE IT HELPS

PLEASE MARK AS BRAINLIEST

Similar questions