Q1
What is the formula for speed?
ASpeed = Distance ÷ Time
BSpeed = Distance × Time
CSpeed = Time ÷ Distance
DSpeed = Distance + Time
ICSEClass 6 (ICSE)MathematicsCh 17 · Topic 1
Speed, Distance and Time
Speed, distance, and time are related through the formula: Speed = Distance ÷ Time, helping us calculate travel-related problems.
Core concept
Speed measures how fast something moves, usually in units like kilometres per hour (km/h) or metres per second (m/s).
How it works
The formula Speed = Distance ÷ Time can be rearranged to find distance (Distance = Speed × Time) or time (Time = Distance ÷ Speed).
Why it matters
For example, if a car travels 120 km in 2 hours, its speed is 120 ÷ 2 = 60 km/h.
Key detail
Understanding these relationships helps us solve real-life problems involving travel, like planning journey times or calculating average speed.
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Key diagram
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Quick notes
• Speed = Distance ÷ Time.
• Speed is measured in km/h or m/s.
• Distance = Speed × Time.
• Time = Distance ÷ Speed.
• A car going 120 km in 2 hours has speed 60 km/h.
• These formulas help solve travel problems.
• We can plan journey times using them.
• Average speed uses the same formula.