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Questions and Answers
What is the unit of speed in which the falcon's speed is represented in Table 13.4?
If a car travels at a speed of 40 km/h for 2 hours, how far will it travel?
What type of speed is measured by a speedometer in a car?
Which of the following factors does not affect the speed of an object?
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In which of the following everyday situations is speed not an important consideration?
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What is the speed of the giant tortoise in m/s, according to Table 13.4?
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What is the primary factor in determining which object is moving the fastest?
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When comparing the speed of two objects, what is the most relevant piece of information?
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What is a common experience that illustrates the concept of speed?
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What is the significance of the time taken to cover a certain distance?
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What is the relationship between speed and the distance covered by an object?
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What is the primary unit of speed?
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What is an example of speed in everyday life?
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What can be used to compare the speed of different objects?
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What is the type of speed calculated in the case of a car moving with a speed of 50 kilometres per hour?
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What is the unit of speed used in the example of the car moving at 50 kilometres per hour?
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Why is the speed calculated as total distance covered divided by total time taken?
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What is the factor that affects the speed of a car in everyday life?
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What is the purpose of measuring intervals of time that are much shorter than a day?
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How do clocks and watches measure time?
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What is the term used in this book to describe the average speed of an object?
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What is the main difference between the speed of a car and the speed of a bicycle?
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Study Notes
Motion and Speed
- Motion refers to the movement of objects, such as a bicycle, a swing, a pendulum, and the Earth moving around the Sun.
- Speed is the distance covered by an object in a given interval of time.
Calculating Speed
- Speed = Total distance covered ÷ Total time taken
- Distance covered = Speed × Time
Measuring Speed and Time
- Clocks and watches are used to measure intervals of time, which are often shorter than a day.
- Speedometers in vehicles measure speed in km/h.
Speed of Animals
- The fastest speed of some animals are:
- Falcon: 320 km/h (320 × 10^3 m/s)
- Cheetah: 112 km/h
- Blue fish: 40-46 km/h
- Rabbit: 56 km/h
- Squirrel: 19 km/h
- Domestic mouse: 11 km/h
- Human: 40 km/h
- Giant tortoise: 0.27 km/h
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Description
Test your understanding of motion and speed with this quiz, covering concepts such as athletes, bicycles, and the motion of the Earth around the Sun.
