Question

please answer Q3 a and b and Q 5

Answer 1

Heya Frnd..........☺

1 km = 1000 m

1 hr = 60 min.

Q - 3

A ) 20 km / min

= 20 × 1000 / 60

= 20000/60

= 333.33 m/ min

B) 72 km/hr

= 72 × 5/18

= 20m/ sec.

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Q - 5

ANS:-

speed = 10km / hr

time taken for travelling 1 m. = 60/10000 min.

Now,

750 m = 750 × 60 / 10000

= 4.5 minutes. ...............ANS

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