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Law Incorporation [45]
3 years ago
5

A train accelerates from rest and covers a distance of 600m in 20s. What is the train's speed at the end of 20s? What is the fin

al velocity of the train after 20s?
Physics
1 answer:
Allushta [10]3 years ago
6 0

Answer:

v = 60 m/s

final velocity after 20 seconds depends on how long it continues to accelerate after 20 seconds. Also we do not know the direction to complete the velocity requirements of a scalar value and direction component.

Explanation:

If we assume that the acceleration is constant

d = ½at² = ½(Δv/t)t² = ½Δvt = ½(v - 0)t = ½vt

v = 2d/t

v = 2(600)/20 = 60m/s

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