Question

b. A school bus takes 45 minutes to cover a distance of 20 km. Calculate its speed in km/h. Also
convert it into m/s.

Answer 1

Answer:

26.66 km/h

Explanation:

As per the formula

SPEED = DISTANCE/TIME

SPEED =. 20 × 60 /45

SPEED = 26.66 KM/h

Now we have to convert it in M/s so multiply by 5/18

SPEED = 26.66 × 5/18

SPEED = 70.405 M/s

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Answer 2

Answer:

45 minutes = 45 / 60 h = 3/ 4 h . Distance covered = 18 km  .Time taken = 3/4h

- > speed = ( 18 of 3 / 4 ) km / h = ( 18 x 4 / 3 ) km / h = 24 km / h .

LET US EXPRESS THE SPEED IN M / S .

- > Distance = 18 x 1000 m  . Time = 45 x 60 s .

- > Speed = 18 x 1000 m / 45 x 60 s = 6 . 67 m / s .

Explanation: