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Physics
A particle starts from rest. Its acceleration ‘a’ versus time ‘t’ is shown in the figure. The maximum speed of the particle will be:
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Q. A particle starts from rest. Its acceleration ‘$a$’ versus time ‘$t$’ is shown in the figure. The maximum speed of the particle will be:
KCET
KCET 2021
Motion in a Straight Line
A
$80\, ms ^{-1}$
47%
B
$40\, ms ^{-1}$
23%
C
$18 \,ms ^{-1}$
15%
D
$2\, ms ^{-1}$
15%
Solution:
Area under a $-t$ graph $=v-u$
$\frac{1}{2} \times 8 \times 10= v $
$v =40 \,m s ^{-1}$
