Question

please help me to do​

Answer 1

Explanation:

$x = (t³ - 3t² + 2t - 7)m$

$Differencial \: with \: respect \: to \: t-$

$\frac{dx}{dt} = (3t² - 6t + 2)$

$v = (3t² - 6t + 2)m/sec.$

$again \: D \: w \: r \: to \: t-$

$\frac{dv}{dt} = (6t - 6)$

$a = (6t - 6)m/Sec²$

$when , a = 0$

$(6t - 6) = 0$

$6t = 6$

$t = 1 \: Second$

$then ,$

$v = 3(1)² - 6(1) + 2$

$v = 3 - 6 + 2$

$v = -1 m/Sec$