Questions and Answers
What is speed?
Distance travelled per unit time.
What is force?
A push or pull.
What is motion?
The state in which one object's distance from another is changing.
If a car travels 400m in 10 seconds, what is your speed?
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If you move 50 meters in 10 seconds, what is your speed?
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How far can your little brother get if he can travel at 2.5 m/s in 5 seconds?
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How far can you get away if you can travel 3 m/s for 15 seconds?
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How long will it take to walk 200 meters at 1.5 m/s?
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What is Lauren's average speed if she drives 16 km in 0.25 hours?
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What is the formula for distance?
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What is the formula for time?
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What is the formula for speed?
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If you arrive in class 45 seconds after leaving math, which is 90 meters away, how fast did you travel?
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How much time will it take for a bug to travel 5 meters at 1 meter per second?
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A plane travels 395000 meters in 9000 seconds. What was its speed?
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Study Notes
Speed
- Defined as the distance travelled per unit time.
- Example: If a car travels 400 meters in 10 seconds, its speed is calculated as 20 m/s.
Force
- Described as a push or pull exerted on an object.
Motion
- Defined as the state where the distance of one object from another is changing.
Calculating Speed
- Example calculation: Moving 50 meters in 10 seconds results in a speed of 5 m/s.
- Another example: A little brother travels at 2.5 m/s for 5 seconds, covering a distance of 12.5 meters.
- If you can travel 3 m/s for 15 seconds to escape, you would cover 45 meters.
Distance and Time
- Time taken to walk 200 meters at 1.5 m/s is approximately 133 seconds.
- Lauren drives 16 km in 0.25 hours, averaging 64 km/h.
Key Formulas
- Distance is calculated using the formula: distance = speed * time.
- Time can be found using: time = distance/speed.
- Speed can be calculated with: speed = distance/time.
Example Problems
- Arriving in class 90 meters away after 45 seconds corresponds to a speed of 2 m/s.
- A bug takes 5 seconds to travel 5 meters at a speed of 1 m/s.
- A plane flying 395,000 meters in 9,000 seconds has a speed of approximately 44 m/s.
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Description
Test your understanding of key physics concepts related to speed, force, and motion. This quiz includes calculations and applications of distance, speed, and time, as well as example problems to reinforce your learning. Get ready to measure your mastery of these fundamental principles of physics!
