Question

Q18.A car is moving with 72
km/hrs. The speed of car in m/s is
1 point
O a). 20 m/s
O b) 25 m/s
O c) 30 m/s
O d) 40 m/s

Answer 1

a) 20m/s

72 km/hr = (72×1000) /(60×60) m/s

= 72000/3600

= 20 m/s

Answer 2

Given :

• Speed of the car is 72 km/hrs

To find :

• The speed of car in m/s

According to the question,

For converting it into m/s

We use the following steps,

$\implies\sf{ \frac{72 \times 10 \cancel{00}}{6 \cancel0 \times 6 \cancel0} }$

$\sf \implies \frac{720}{36}$

$\implies\boxed{\sf20\:m/s} \green \bigstar$

So,the a) is the correct option. The speed of the car is 20 m/s