1.

A bus accelerates uniformly from rest and acquires a speed of 72kmph in 20 sec find acceleration

Answer» HI...☺

Here is your ANSWER...✌

GIVEN THAT,

Initial VELOCITY , u = 0 m/s

Final velocity

v = 72 km /h

v = 72 × 5 / 18 m/s

v = 4 × 5 m/s

v = 20 m/s

Also given that

Time TAKEN , t = 20 s

Now,

We know that,

Acceleration

a = \frac{v - u}{t} \\ \\ a = \frac{20 \: - 0}{20} \: m/ {s}^{2} \\ \\ a = 1 \: m/ {s}^{2}

HENCE,

The acceleration of bus was 1 m/s²


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