Question

a bus accelerated uniformly from 54km/h to 72km/h in 10sec find the acceleration​

Answer 1

Answer:

Steps:

First convert the speed in m/s if time is in seconds by multiplying by 5/18.

S1=54×5/18

=15m/s

S2=72×5/18

=20m/s

v (final velocity)=20m/s

u (initial velocity)=15m/s

According to the equation of motion:

$a = \frac{(v - u)}{t}$

$a = \frac{(20 - 15)}{10}$

$a = \frac{5}{10}$

$a = 0.5m/s$