Question

a man travels 9 km in 150 minutes find the average speed in km/h​

Answer 1

Answer:

Hope it helps you and thank you

Answer 2

Given that;

• Distance traveled = 9 km
• Time taken = 150 minutes

We are asked to find average speed of the man in kmph.

★ We know that average speed is defined as the ratio of total distance travelled to the total time taken.

• It is a scalar quantity having only magnitude.
• SI unit : m/s
• Dimensional formula : [L¹T‾¹]

Mathematically,

$\bf:\implies\:\underline{\boxed{\bf{\purple{v=\dfrac{Total\:distance\: travelled}{Total\:time\:taken}}}}}$

❖ Conversion :

• 60 min = 1 hr

→ 150 min = (150/60) hr = 2.5 hr

By substituting the given values;

$\sf:\implies\:v=\dfrac{d}{t}$

$\sf:\implies\:v=\dfrac{9}{2.5}$

$:\implies\:\underline{\boxed{\bf{\gray{v=3.6\:kmph}}}}$