Forces and Motion - Speed, Distance, and Time Calculations

Grade 7IB

Review the key concepts, formulae, and examples before starting your quiz.

🔑Concepts

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s = \frac{d}{t}

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m

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s

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m/s

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v_{avg} = \frac{d_{total}}{t_{total}}

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0 \text{ m/s}

📐Formulae

Speed (s) = \frac{Distance (d)}{Time (t)}

Distance (d) = Speed (s) \times Time (t)

Time (t) = \frac{Distance (d)}{Speed (s)}

💡Examples

Problem 1:

45 \text{ km}

Solution:

s = \frac{45 \text{ km}}{3 \text{ h}} = 15 \text{ km/h}

Explanation:

45 \text{ km}

Problem 2:

8 \text{ m/s}

Solution:

d = 8 \text{ m/s} \times 25 \text{ s} = 200 \text{ m}

Explanation:

8 \text{ m/s}

Problem 3:

120 \text{ km/h}

Solution:

t = \frac{300 \text{ km}}{120 \text{ km/h}} = 2.5 \text{ hours}

Explanation:

300 \text{ km}