Question

1) a boy coverd 24km in 1 hour 20 min find his speed.
2) 150km into metre per second ​

Answer 1

Answer:

1). 300m/minute

2). 150 Kilometers per Hour =

41.666667 Meters per Second

Answer 2

Answer:

1) Distance covered= 24km

= 24×1000 m

= 24000 m

Time taken = 1 hour 20min

= 1× 3600 ×20×60 sec

= 4320000sec

Speed= Distance/Time

= 24000/4320000

= 24/4320

= 0.00556

= 5.56×10^-3m/sec

The speed of the boy is 5.56×10^-3m/s..

2) 150 km/hr into m/s

= 150×1000/3600 m/s

= 150×5/18 m/s (dividing 150 & 18 by 2)

= 75×5/9 m/s (dividing 75 & 9 by 3)

= 25× 5/3 m/s

= 125/3 m/s

= 41.67m/s

= 42m/s (approx)

Thanks..

Hope it helps...

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