Question

- A body travelling with a velocity of 120 ms -1 accelerates uniformly
Calculate the velocity and the distance travelled in 40 S.
[Ans. 920 ms 1; 20800 m]
ndicho​

Answer 1

$initia l \: velocity \: (u) = 120 {ms}^{ - 1}$

$acceleration \:( a) \: = 20 {ms}^{ - 1}$

$final \: velocity \: (v) = u + at$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 120 + 20 \times 40$

$\: \: \: \: \: \: \: = 120 + 800$

$= 920 {ms}^{ - 1}$

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

$s = 120 \times 40 + \frac{1}{2} \times 20 \times 1600$

$= 4800 + 16000$

$= 20800$

You didn't mention the acceleration. According to the answer given I took it aas20m/s2 . Mark it as brainliest