Podcast
Questions and Answers
A cyclist travels 30 kilometers in 1 hour and 15 minutes. What is the cyclist's average speed in kilometers per hour?
A cyclist travels 30 kilometers in 1 hour and 15 minutes. What is the cyclist's average speed in kilometers per hour?
- 24 km/h (correct)
- 37.5 km/h
- 25 km/h
- 30 km/h
If a train travels at a constant speed of 120 km/h, how long will it take to cover a distance of 480 kilometers?
If a train travels at a constant speed of 120 km/h, how long will it take to cover a distance of 480 kilometers?
- 3 hours
- 5 hours
- 4 hours (correct)
- 6 hours
A runner completes a 5,000-meter race in 20 minutes. What is the runner's average speed in meters per second?
A runner completes a 5,000-meter race in 20 minutes. What is the runner's average speed in meters per second?
- 16.67 m/s
- 250 m/s
- 4.17 m/s (correct)
- 416.67 m/s
A car travels at 80 km/h for the first 2 hours of a journey and then at 100 km/h for the next 3 hours. What is the average speed of the car for the entire journey?
A car travels at 80 km/h for the first 2 hours of a journey and then at 100 km/h for the next 3 hours. What is the average speed of the car for the entire journey?
How far would a high-speed train travel in 3.5 hours if it maintains an average speed of 240 kilometers per hour?
How far would a high-speed train travel in 3.5 hours if it maintains an average speed of 240 kilometers per hour?
A boat travels 60 miles upstream in 3 hours and returns downstream in 2 hours. If the boat's speed in still water is constant, what is the speed of the current?
A boat travels 60 miles upstream in 3 hours and returns downstream in 2 hours. If the boat's speed in still water is constant, what is the speed of the current?
An airplane flies from City A to City B in 4 hours at a speed of 500 km/h. On the return trip, the airplane flies at a speed of 400 km/h. How long does the return trip take?
An airplane flies from City A to City B in 4 hours at a speed of 500 km/h. On the return trip, the airplane flies at a speed of 400 km/h. How long does the return trip take?
A snail crawls 50 cm in 5 minutes. What is its speed in meters per hour?
A snail crawls 50 cm in 5 minutes. What is its speed in meters per hour?
Two cars start traveling towards each other from two cities 300 km apart. Car A travels at 60 km/h and Car B travels at 40 km/h. After how many hours will the two cars meet?
Two cars start traveling towards each other from two cities 300 km apart. Car A travels at 60 km/h and Car B travels at 40 km/h. After how many hours will the two cars meet?
If a rocket travels at a speed of $2 \times 10^4$ meters per second, how far will it travel in 1 minute, expressed in kilometers?
If a rocket travels at a speed of $2 \times 10^4$ meters per second, how far will it travel in 1 minute, expressed in kilometers?
Flashcards
What is Speed?
What is Speed?
The distance an object travels in a specific amount of time.
Speed Calculation Formula
Speed Calculation Formula
Speed = Distance Traveled / Time
Usain Bolt's Speed (100m)
Usain Bolt's Speed (100m)
Approx. 10.44 meters per second.
Units for Speed
Units for Speed
Signup and view all the flashcards
Formula One Car Speed
Formula One Car Speed
Signup and view all the flashcards
Kilometers to Meters
Kilometers to Meters
Signup and view all the flashcards
Hours to Seconds
Hours to Seconds
Signup and view all the flashcards
Formula One Car Speed (m/s)
Formula One Car Speed (m/s)
Signup and view all the flashcards
Calculate Distance
Calculate Distance
Signup and view all the flashcards
Calculate Time
Calculate Time
Signup and view all the flashcards
Study Notes
- Speed measures the distance an object travels in a certain time.
- Speed is calculated using the formula: Speed = Distance Traveled / Time.
Usain Bolt's Speed Calculation
- In 2009, Usain Bolt set the world record for the 100-meter sprint in 9.58 seconds.
- Distance traveled by Usain Bolt: 100 meters.
- Time taken by Usain Bolt: 9.58 seconds.
- Usain Bolt's speed: 100 meters / 9.58 seconds = 10.44 meters per second.
- The units for speed are derived from the units of distance (meters) and time (seconds), resulting in meters per second (m/s).
Formula One Car's Speed
- The Formula One car speed was 375 kilometers per hour.
Comparing Speeds
- Comparing speeds requires the units to be the same.
Converting Units
- Kilometers can be converted to meters by multiplying by 1,000.
- Hours can be converted to seconds by multiplying by 60 (to get minutes) and then by 60 again.
Formula One Car's Speed in Meters Per Second
- 375 kilometers per hour is equal to 375,000 meters / 3,600 seconds = 104.2 meters per second.
- A Formula One car is much faster than Usain Bolt.
Formula Triangle
- Speed = Distance / Time
- Time = Distance / Speed
- Distance = Speed × Time
Example Questions
- Includes example questions on distance and time
- Distance = 150 kilometers
- Time = 1.66 hours (1 hour 40 minutes)
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
