Question

A car's Odometer reads 22687 km at the start of a trip and 22791 km at the end of the trip.If the trip takes 4 hour then the average speed of the car in kmph and ms-1

Answer 1

Given :

Initial reading = 22687 km

Final reading = 22791 km

Time of journey = 4hr

To Find :

Average speed of car in km/h and m/s.

Solution :

★ Average speed is defined as the ratio of total distance travelled to the total time taken.

• It is a scalar quantity having only magnitude.
• It can't be negative or zero.
• SI unit : m/s

$\sf{:\implies\:V_{av}=\dfrac{(Reading)_{final}-(Reading)_{initial}}{Total\ time}}$

By substituting the given values;

$:\implies\sf\:V_{av}=\dfrac{22791-22687}{4}$

$:\implies\sf\:V_{av}=\dfrac{22791-22687}{4}$

$:\implies\sf\:V_{av}=\dfrac{104}{4}$

$:\implies\:\underline{\boxed{\bf{\purple{V_{av}=26\:kmph}}}}$

★ Conversion (kmph → mps)

We know that, 1 kmph = 5/18 mps

Therefore,

• 26kmph = 26 × 5/18

$:\implies\:\underline{\boxed{\bf{\orange{V_{av}=7.22\:mps}}}}$

Answer 2

Answer:

HOPE IT HELPS BUDDY.....