Question
A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 s is s1 and that covered in the first 20 s is s2, then
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s2 = 2s1
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s2 = 3s1
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s2 = 4 s1
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s2 = s1
Solution
C.
s2 = 4 s1
If the particle is moving in a straight line under the action of a constant force then distance covered s = ut + at2 /2
since the body start from rest u = 0
therefore, s = at2/2
Now,
