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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?
What is the unit of speed in which the falcon's speed is represented in Table 13.4?
- km/m
- m/h
- m/s
- km/h (correct)
If a car travels at a speed of 40 km/h for 2 hours, how far will it travel?
If a car travels at a speed of 40 km/h for 2 hours, how far will it travel?
- 120 km
- 100 km
- 60 km
- 80 km (correct)
What type of speed is measured by a speedometer in a car?
What type of speed is measured by a speedometer in a car?
- Relative speed
- Uniform speed
- Instantaneous speed (correct)
- Average speed
Which of the following factors does not affect the speed of an object?
Which of the following factors does not affect the speed of an object?
In which of the following everyday situations is speed not an important consideration?
In which of the following everyday situations is speed not an important consideration?
What is the speed of the giant tortoise in m/s, according to Table 13.4?
What is the speed of the giant tortoise in m/s, according to Table 13.4?
What is the primary factor in determining which object is moving the fastest?
What is the primary factor in determining which object is moving the fastest?
When comparing the speed of two objects, what is the most relevant piece of information?
When comparing the speed of two objects, what is the most relevant piece of information?
What is a common experience that illustrates the concept of speed?
What is a common experience that illustrates the concept of speed?
What is the significance of the time taken to cover a certain distance?
What is the significance of the time taken to cover a certain distance?
What is the relationship between speed and the distance covered by an object?
What is the relationship between speed and the distance covered by an object?
What is the primary unit of speed?
What is the primary unit of speed?
What is an example of speed in everyday life?
What is an example of speed in everyday life?
What can be used to compare the speed of different objects?
What can be used to compare the speed of different objects?
What is the type of speed calculated in the case of a car moving with a speed of 50 kilometres per hour?
What is the type of speed calculated in the case of a car moving with a speed of 50 kilometres per hour?
What is the unit of speed used in the example of the car moving at 50 kilometres per hour?
What is the unit of speed used in the example of the car moving at 50 kilometres per hour?
Why is the speed calculated as total distance covered divided by total time taken?
Why is the speed calculated as total distance covered divided by total time taken?
What is the factor that affects the speed of a car in everyday life?
What is the factor that affects the speed of a car in everyday life?
What is the purpose of measuring intervals of time that are much shorter than a day?
What is the purpose of measuring intervals of time that are much shorter than a day?
How do clocks and watches measure time?
How do clocks and watches measure time?
What is the term used in this book to describe the average speed of an object?
What is the term used in this book to describe the average speed of an object?
What is the main difference between the speed of a car and the speed of a bicycle?
What is the main difference between the speed of a car and the speed of a bicycle?
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.
