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GaryK [48]
3 years ago
12

What is the speed of a skater who travels a distance of 210 m in a time of 10 seconds?

Physics
1 answer:
Klio2033 [76]3 years ago
7 0

21m per second. Take 210 divided by 10. Hope this helps!

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IMPORTANT 3 QUESTIONS!
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Answer:

7. 20,000,000 mL.

8. 8,000 m.

9. 120,000 secs.

10. 4

Explanation:

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Volume in millilitres (mL) =..?

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8. Determination of the distance in metre (m)

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Distance in metre =?

First, we shall convert from mile to kilometre.

This can be done as follow:

1 mile = 1.6 km

Therefore,

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Finally, we shall convert 8 km to metre (m).

This is illustrated below:

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Therefore, 5 miles is equivalent to 8,000 m.

9. Determination of the time in seconds.

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First, we shall convert 400 mins to hour.

This is illustrated below:

60 minutes = 1 hour

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400 mins = 400/60 = 20/3 hours

The time (hours) is 20/3 hours in 1 day.

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Next, we shall convert 100/3 hours to minutes.

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100/3 hours = 100/3 x 60 = 2000 mins

Finally, we shall convert 2000 mins to seconds.

This is illustrated below:

1 mins = 60 secs

2000 mins = 2000 x 60 = 120,000 secs.

Therefore, the time is 120,000 secs.

10. Determination of the number of significant figures.

To obtain the significant figures of a number, we simply count all the numbers available.

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