Question

The velocity of a bus increases from 72 km/h to 30m/s in 10 seconds. Calculate its acceleration.

Answer 1

$<b>Hey mate!!$

Initial velocity (u) = 72 km/hr

$= 72 \times \frac{5}{18} \\ \\ = 4 \times 5 = 20$

=> 20 m/s

Final velocity (v) = 30m/s

Time taken (t) = 10 seconds.

Acceleration (a) = ?

We know that;

v = u + at

$\bold{a = \frac{v - u}{t} } \\ \\ \bold{a = \frac{30 - 20}{10} } \\ \\ \bold{a = \frac{10}{10 } } = 1$

acceleration = 1 m/s²

Thanks for the question!!

☺☺☺

Answer 2

$hope \: you \: understood$