Number, NAPX9-TLF-CA31 v3

Question

Scientists have discovered that light travels at approximately 290 000 kilometres per second.

Which estimate, in kilometres, is closest to the distance that light travels in two minutes?

Worked Solution

There are 120 seconds in 2 minutes.

Total distance travelled
= 120 × 290 000
= 34 800 000
= {{{correctAnswer}}} km

Variant 0

DifficultyLevel

685

Question

Scientists have discovered that light travels at approximately 290 000 kilometres per second.

Which estimate, in kilometres, is closest to the distance that light travels in two minutes?

Worked Solution

There are 120 seconds in 2 minutes.

Total distance travelled
= 120 × 290 000
= 34 800 000
= 3.48×1073.48 × 10^7 km

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
correctAnswer
$3.48 × 10^7$

Answers

Is Correct?Answer
x

3.48×1063.48 × 10^6

✓

3.48×1073.48 × 10^7

x

1.74×1061.74 × 10^6

x

1.74×1071.74 × 10^7

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