Q.

For a particle starting from rest and travelling with a uniform acceleration along a straight line

i vt    ii st2    iii vs   

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a

All are true      

b

(i), (ii) are true but (iii) is false

c

all are false

d

(i), (iii) are true but (ii) is false

answer is C.

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Detailed Solution

Given that a particle starting from rest u = 0

Moving with uniform acceleration 

Then we can have final velocity = v

After time taken = t

Distance covered = s

By using equation of motion

i) v=u+at v=at       vt (ii) s=ut+12at2 s=12at2      st2 (iii) v2-u2=2as v2=2as     vs So we get all are true. 

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