Question

a train is moving with uniform velocity 2km/h after 20 second it moving with a velocity 4km/h and an acceleration is 5m/s^2.find displacement by the train​

Answer 1

Explanation:

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Answer 2

Answer:

let's first convert km/h to m/s

1) U = 2 km/h = 2×(5/18) = 10/18= 5/9 m/s

2) V = 4 km/hr = 20/18 = 10/9 m/s

Therefore, V²-U² = 2aS

So, (5/9)² - (10/9)² = 2×5×S

Therefore, S = 0.1 m