A woman starts from her home at 9 a.m. She covers
distance of 2.5 km with a speed of 5 km/hr. She
works in the office till 5 pm. Then return back to
home with a speed of 25 km/hr. Draw position-time
graph for the woman.
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Answer:
Speed of the woman = 5 km/h
Distance between her office and home = 2.5 km
Time taken = Distance / Speed
= 2.5/5=0.5 h=30 min
It is given that she covers the same distance in the evening by an auto.
Now, speed of the auto =25 km/h
Time taken = Distance / Speed
= 2.5/25=1/10=0.1 h=6 min
The suitable x-t graph of the motion of the woman is shown in the given figure.
Explanation:
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