Understanding Speed and Velocity Concepts

The video tutorial covers the concepts of speed and velocity, explaining their differences and how they are measured. It discusses the units of speed, including SI units, and introduces average and instantaneous speed. The tutorial includes example problems to demonstrate calculations of average speed and unit conversions. Students are encouraged to practice with additional problems to reinforce their understanding.

What is the main difference between speed and velocity?

• Speed is measured in meters, velocity in seconds.

• Speed includes direction, velocity does not.

• Velocity includes direction, speed does not.

• Velocity is always greater than speed.

Which of the following is not a common unit of speed?

• Kilometers per hour

• Seconds per meter

• Meters per second

• Miles per hour

How is average speed calculated?

• Instantaneous speed at the end of the trip

• Instantaneous speed at the start of the trip

• Total time divided by total distance

• Total distance divided by total time

If a car travels 78 miles in 1.2 hours, what is its average speed in miles per hour?

• 60 miles per hour

• 65 miles per hour

• 75 miles per hour

• 70 miles per hour

Convert 65 miles per hour to meters per second. (1 mile = 1609 meters, 1 hour = 3600 seconds)

• 28.1 meters per second

• 29.1 meters per second

• 30.1 meters per second

• 31.1 meters per second

What is the average speed of an aircraft that travels 115 miles in 30 minutes in miles per hour?

• 220 miles per hour

• 210 miles per hour

• 230 miles per hour

• 200 miles per hour

If a snail travels 5 meters in 12 hours, what is its average speed in millimeters per minute?

• 9.9 millimeters per minute

• 8.9 millimeters per minute

• 7.9 millimeters per minute

• 6.9 millimeters per minute

How do you convert kilometers to miles?

• Multiply by 1.61

• Divide by 1.61

• Multiply by 0.61

• Divide by 0.61

What is the total distance traveled if you go 48 kilometers in 0.5 hours and 64 kilometers in 0.7 hours?

• 100 kilometers

• 109 kilometers

• 112 kilometers

• 120 kilometers

What is the average speed in miles per hour if you travel 109 kilometers in 1.2 hours?

• 50.4 miles per hour

• 55.4 miles per hour

• 56.4 miles per hour

• 60.4 miles per hour