A woman starts from her home at 9.00 am, walks with a speed of 5 km h-1 on a
straight road up to her office 2.5 km away, stays at the office up to 5.00 pm, and
returns home by an auto with a speed of 25 km h-1. Choose suitable scales and
plot the x-t graph of her motion.
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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 following attachment.
Attachments:
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