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Question 1 of 4
A dog is running at 30 km/hour. How long will the dog take to travel 120 km?
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Speed-Distance-Time Formula
Speed=DistanceTime
First, derive the formula to solve for the time.
Speed |
= |
DistanceTime |
|
Distance |
= |
Speed⋅Time |
Cross multiply |
|
Time |
= |
DistanceSpeed |
Divide both sides by Speed |
Next, substitute the known values to the derived formula.
Speed |
= |
30 km/hour |
Distance |
= |
120 km |
Time |
= |
DistanceSpeed |
|
|
= |
120km30km/hour |
Substitute known values |
|
|
= |
4 hours |
km cancels out |
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Question 2 of 4
A jet flies at a speed of 680 km/hour. Use the speed-distance-time formula to determine how far it can travel in 30 minutes.
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0:00
Speed-Distance-Time Formula
Speed=DistanceTime
First, derive the formula to solve for the distance.
Speed |
= |
DistanceTime |
|
Distance |
= |
Speed⋅Time |
Cross multiply |
Next, substitute the known values to the derived formula.
Speed |
= |
680 kmhour |
|
Time |
= |
12 hour |
Distance |
= |
Speed⋅Time |
|
|
= |
680kmhour⋅12hours |
Substitute known values |
|
|
= |
340 km |
Hours cancel out |
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Question 3 of 4
A train travelled 360km in 1 hour and 20 minutes. What is the speed of the train?
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Speed-Distance-Time Formula
Speed=DistanceTime
First, convert the minutes into hours.
20×160 |
= |
2060 |
|
|
= |
13 |
Simplify |
The total time is 113 hours.
Next, substitute the known values to the formula.
Distance |
= |
360 km |
|
Time |
= |
113 hour |
Speed |
= |
DistanceTime |
|
|
= |
360km113hours |
Substitute known values |
|
|
= |
270 km/hour |
Evaluate |
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Question 4 of 4
A car is travelling at 80 km/hour. How long will it take to travel 500 km?
Round your answer in decimal form
Incorrect
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Progress: 0%
0:00
Speed-Distance-Time Formula
Speed=DistanceTime
First, derive the formula to solve for the time.
Speed |
= |
DistanceTime |
|
Distance |
= |
Speed⋅Time |
Cross multiply |
|
Time |
= |
DistanceSpeed |
Divide both sides by Speed |
Next, substitute the known values to the derived formula.
Speed |
= |
80 km/hour |
Distance |
= |
500 km |
Time |
= |
DistanceSpeed |
|
|
= |
500km80km/hour |
Substitute known values |
|
|
= |
6.25 hours |
km cancels out |