Question

Please answer questions 3 and 6 that I have attached

Answer 1

$\huge\sf\boxed{\fcolorbox{red}{black}{\red{Answer}}}$

u=0m/s

s=180m

$a = 10m {s}^{2}$

Using second equation of motion

$s = ut + \frac{1}{2} a {t}^{2}$

$180 = 0 + \frac{1}{2} \times 10 \times {t}^{2}$

$180 = 5 \times {t}^{2}$

$\frac{180}{5} = {t}^{2}$

$36 = {t}^{2}$

$t = 6sec$

Using first equation of motion

$v = u + at$

$v = 0 + 10 \times 6$

$v = 60m {s}^{ - 1}$

Time taken is 6seconds and initial velocity is 0m/s and final velocity is 60m/s.