Question

A 150 m long train having a constant acceleration crosses a 300 m long platform enters the platform at a speed of 40 m/s and leaves it at a speed of 50 m/s. What is the acceleration of the train? (1) 0.6 m/s (2) 0.8 m/s 13) 10 m/s (4)1.2 m/s

Answer 1

Answer:

1 m/s²

Explanation:

Total distance travelled by train to completely pass the platform = 150 m + 300 m = 450 m

Use equation of motion

a = (v² - u²) / (2S)

= (50² - 40²) / (2 × 450)

= 1 m/s²