Question

The position (x) of a particle moving along x-axis
varies with time (t) as x = t^2 - 4t + 5. The particle
turns around at
(1) t=1s
(2) t=2s
(3) t=35
(4) t = 48​

Answer 1

Answer:

$\frac{dx}{dt} = 2t - 4 = 0 \\ \\ t = 2s$