Question

A car accelerates uniformly from 18km/hr to 236km/hr in 5seconds.Calculate the acceleration .

Answer 1

Hi...☺

Here is your answer...✌

GIVEN THAT,

Initial Velocity,

$u = 18 \: km/h \\ \\ u = 18 \times \frac{5 }{18} \: m/s\\ \\ u = 5 \: m/s$

Final Velocity,

$v = 236 \: km/h \\ \\ v = 236 \times \frac{5}{18} \: m/s \\ \\ v = 65.55 \: m/s$

Time taken, t = 5 s

Now

Acceleration,

$a = \frac{v - u}{t} \\ \\ a = \frac{ 65.55 - 5}{5} \: m/ {s}^{2} \\ \\ a = \frac{60.55}{5} \: m/s ^{2} \\ \\ a = 12.11 \: m/ {s}^{2}$