Question

a bus accelerate uniformly from 18 km/h to 36km/h in 10 second calcute the acceleration

Answer 1

For calculating acceleration, velocities should be in m/s

18km/hr =

$18 \times \frac{5}{18} = 5$
5m/s

36km/hr =
$36 \times \frac{5}{18} = 10$
10m/s


a =
$\frac{v - u}{t}$
v = final velocity = 10m/s
u = initial velocity = 5m/s
t = time = 10s
a = acceleration


so acceleration =
$\frac{10 - 5}{10} \\ = \frac{5}{10} = 0.5$

acceleration is 0.5 m/s²


Hope it helps dear friend ☺️

Answer 2

first covert into m per seconds so

using v= u+at