Worksheet: Calculating Distance = Speed x Time - Free Printable

Let’s solve each problem one by one using the formula:
D = S × T
Where:
- D = Distance
- S = Speed
- T = Time

We’ll rearrange the formula when needed:
→ To find Speed: S = D ÷ T
→ To find Time: T = D ÷ S

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Problem 1:

A football field is about 90 meters long. If it took Lucky 20 seconds to run its length, how fast was he running?

We are given:
D = 90 meters
T = 20 seconds
We need to find S (speed).

Use:
S = D ÷ T
S = 90 ÷ 20
S = 4.5

✔ So, Lucky was running at 4.5 meters per second.

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Problem 2:

If you drive at 120 km/hr for 5 hours, how far will you go?

Given:
S = 120 km/hr
T = 5 hours
Find D.

Use:
D = S × T
D = 120 × 5
D = 600

✔ You will travel 600 kilometers.

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Problem 3:

If you can sit 8m/s for 24 minutes, how far will you go in kilometers?

Wait — “sit” probably means “move” or “travel”. Let’s assume it’s a typo and should be “travel at 8 m/s”.

Given:
S = 8 meters per second
T = 24 minutes → but we need time in seconds, because speed is in meters per second.

Convert 24 minutes to seconds:
24 × 60 = 1440 seconds

Now use:
D = S × T
D = 8 × 1440
D = 11,520 meters

But the question asks for distance in kilometers.
So convert meters to kilometers:
11,520 ÷ 1000 = 11.52 km

✔ You will travel 11.52 kilometers.

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Problem 4:

A bullet travels at 700 m/s. How long will it take a bullet to go 0.8 km?

First, make sure units match.
Bullet speed is in meters per second, but distance is in kilometers.

Convert 0.8 km to meters:
0.8 × 1000 = 800 meters

Given:
D = 800 meters
S = 700 m/s
Find T.

Use:
T = D ÷ S
T = 800 ÷ 700
T ≈ 1.142857... seconds

Round to reasonable decimal places — let’s say 2 decimals:
T ≈ 1.14 seconds

✔ It will take about 1.14 seconds.

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Final Answer:

1. S = 4.5 m/s
2. D = 600 km
3. D = 11.52 km
4. T = 1.14 s