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NEET • PHYSICS • MOTION IN A STRAIGHT LINE

Motion in a straight line practice · Hard

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31 Hard
31 of 33
Application +4 | -1
A stone falls freely from rest from a height h and it travels a distance 9h25\frac{{9h}}{{25}} in the last second. The value of h is
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Correct option: C
122.5 m
Option C (122.5 m) is correct because it is the height from which the stone falls, calculated using the given condition about the distance traveled in the last second.
32 Hard
32 of 33
Application +4 | -1
Two cars leave one after the other and travel with and acceleration of 0.4ms−20.4\mathrm{m}{\mathrm{s}^{ - 2}}. Two minutes after the departure of the first car, the distance between them becomes 1.90 km. The time interval between their departures is
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Correct option: A
50 s
Option A (50 s) is correct because it is the time interval that satisfies the given distance between the two cars after 2 minutes, considering their acceleration.
33 Hard
33 of 33
Application +4 | -1
A man walks up a stationary escalator in 90 seconds. When this man standing on moving escalator, he goes up in 60 second. The time taken by man to walk up the moving escalator is
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Correct option: C
36 s
Option C (36 s) is correct because it is derived from combining the individual speeds of the man and the escalator.
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