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Question

A particle moving along a straight line with constant acceleration of āˆ’2 m/s2 has a velocity of 6 m/s at t=0 sec. Find the ratio of distance and displacement at t=5 sec.

A
13 : 5
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B
17 : 8
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C
9 : 5
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D
11 : 3
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Solution

The correct option is A 13 : 5
v=u+at=62t
v=62t
If v=062t=02t=6t=3 sec
At t=5v=62(5)=4 m/s2

Velocity time graph for given situation can be considered as



Distance =A1+A2=12(6)(3)+12(2)(4)=13
Displacement =A1A2=12(6)(3)12(2)(4)=5
Threfore, the ratio =13:5

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