Question

The velocity of a body moving along x-axis at time
t is given by v = (t^2 – 4t + 6) m/s. Then the time at
which acceleration of the particle will be zero is
(1) 3s
(2) 4s
(3) 1s
4: 2s​

Answer 1

$\frac{dv}{dt} = 2t - 4 \\ \\ now \: acceleration \: will \: be \:zero \\ 2t - 4 = 0 \\ = > t = 2$

answer is (4) 2 sec

Answer 2

Answer:

D

Explanation:

the formula of accelaration is double derivative of the equation