A train from Mumbai to Bangalore is heading south. The speed of the train is recorded for 5 hours. The data is given in the table below.
Time (hr) Speed (km/hr)
1 20
2 45
3 70
4 95
5 120
Based on the table, which of the following remained constant about the train during these 5 hours?
(a) speed as well as velocity (b) acceleration (c) velocity (d) speed
(do give explanation pls)
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Answer:
acceleration remains constant
Explanation:
since acceleration = change in velocity/ time interval
a1 = 45-20/2-1 = 25
a2 = 70-45/3-2 = 25
and so on..
hence acceleration remains constant
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