Question

1 km ?
per hours?
does it cover in:
(a) 1 minute
(6) 1 hour
(c) 12 hours
(d) 1 day?
5. A child runs at a speed of 10 m per second. How much time will it take to cover a distance of 1 km.
6. How long will an athlete take to run a race of 500 m, if his speed is 50 km per hours.
8. How long will a truck take to travel 225 km at a speed of 50 km/h ?
9. A bus takes 3 hours to cover a distance of 225 km. There is another bus whose speed is
15 km/h more than that of first bus. How long will it take to cover the same distance ?
10. How far will a car travel from 10.30 a.m. to noon at a speed of 70 km/h ?
7. The planet Mercury orbits the Sun at a speed of 48 km every second. How much distance does it cover in :
(a) 1 minute
(b) 1 hours
(c)12 hours
(d) 1 day


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Answer 1

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4. 1hour

5. In 1s it's 10m

so in 10m it's 1s

in 1m it's 1/10 s

or in 1000m it's 1/10×1000s

or 100s

6. If speed is 50km /hr

Then in 1 hr he travells 50km

or 50km is travelled in 1hr

or 1km is travelled in 1/50hrs

or 100kn is travelled in 1/50×100 = 2hrs

Rest of the problems , you can do with this same process.

Answer 2

Here is your answer .....

1. 1 hour

5. The child runs 10m in one second. So, he runs 1m in 1/10 seconds. Since 1km=1000m, time taken is 1000 x (1/10) =100 seconds or 1 min 40 seconds.

6.Srichandan At'Po Kumarbasta,Khordha. Hence,athelete will take to run a race 36 sec for 500 metres.

8. 4.5 km/hr

9. there is another bus whose speed is 15 km/hrs more than that of first bus. how long will it take to cover the same distance.

10. 105 km

7. 1 hour

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