For a body starting from rest the displacement in 20 second when it enquires 8 meter per second in 4 sec is
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Initial speed of the body u=0
Displacement in 2 seconds S=ut+
2
1
at
2
⟹ S=0+
2
1
a(2)
2
=2a
⟹ a=
2
S
Displacement in 2 seconds S=ut+
2
1
at
2
⟹ S=0+
2
1
a(2)
2
=2a
⟹ a=
2
S
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