7.
A body starts from origin and moves along x-axis
so that its position at any instant is x = 4t² – 12t
where t is in second and v in m/s. What is the
acceleration of particle?
(1) 4 m/s2
(2) 8 m/s2
(3) 24 m/s2
(4) 0 m/s2
Answers
Answered by
3
Answer:
v = dx/dt
hence v = 8t - 12
a = dv / dt
hence a = 8
hence a is constant at all x
no dependence on x
hence ans is 2) 8 m /s2
Explanation:
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