The velocity of train increase uniformly from 20 km/h to 60 km/h in 4 hours.The distance traveled by the train during this period is?
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2
Answer:
The answer is 160 km of this question
Answered by
1
Answer:
initial velocity = 20 km/h
final velocity = 60 km/h
time taken =4 h
acceleration = change in velocity / time taken
a = 60 - 20 / 4
a = 40 / 4
= 10 km/h²
distance is given by the third equation of motion i.e v² - u² / 2a = S
S = 60² - 40² / 2×10
= 3600 - 1600 / 20
= 2000 / 20
= 100 km
hence the body travels 100 km within the given time i.e 4 h
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