Question

plz give me the answer ​

Answer 1

Answer:

a.

from v= u -at

5 × t = (72 × 1000)÷3600

t = 20÷5

= 4s

b.

from

$s = ut + \frac{1}{2} a {t }^{2} \\ s = 20 \times 4 + \frac{1}{2} 5 \times {4}^{2} \\ s = 80 + 40 \\ s = 120m$

c.

if u = 40 m/s

$s = 40 \times 4 + \frac{1}{2} 5 \times {4}^{2} \\ s = 160 + 40 \\ s = 200m$

please mark me as a brainlist