Question

14. A car travels a distance of 15 km in 20 minute.
Find the speed of the car in (i) km h-!, m -!​

Answer 1

Answer:

(i)45 (ii)12.5

Explanation:

$\frac{15}{\frac{20}{60} } =45\\15000*(20*60)=12.5$

Answer 2

Explanation:

$<h3>Answer$

Distance = 15km

time = 20 minutes

We know that 1 minute = 1/60 hours

20 minutes = 20/60 hours

= 1/3 hours

We know that,

Speed = distance / time

$speed = \frac{15}{ \frac{1}{3} } kmph$

$speed = 15 \times 3 \: kmph$

$speed = 45kmph$

We know that 1 kmph = 5/18 m/s

45 kmph = 45 × 5/18 m/s

= 12.5 m/s

HOPE IT HELPS YOU

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