Unit 2 Speed and Inertia

What two measurements are needed to calculate average speed?

• Distance and Time

• Volume and Mass

• Mass and Time

• Speed and Distance

Runner A ran 12 miles in 4 hours and Runner B ran 9 miles in 3 hours. Which runner had the greatest average speed?

• Runner A

• Runner B

• Both runners had the same average speed.

A student walks 2 km in 30 minutes. What is the student's average speed in km/h?

Which of the following best describes the velocity of an object?

• 30 m/s

• 30 m east

• 30 m/s east

• 30 m/s²

What is the difference between the velocity and the speed of an object?

• Velocity is the change in distance over time, while speed is the change in velocity over time.

• Velocity has a direction associated with it, while speed has no specific direction.

• Velocity has no direction associated with it, while speed has a specific direction.

• Velocity is the change in speed over time, while speed is the change in distance over time.

A car travels a distance of 150 kilometers in 3 hours. What is the average speed of the car in kilometers per hour?

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

Tags

TEKS.SCI.7.7A

A hiker walks 30 kilometers in 5 hours. What is the hiker's average speed in kilometers per hour?

• 4 km/h

• 5 km/h

• 6 km/h

• 7 km/h

Tags

TEKS.SCI.7.7A

A vehicle covers a distance of 180 kilometers in 3 hours. What is the average speed of the vehicle in kilometers per hour?

• 50 km/h

• 55 km/h

• 60 km/h

• 65 km/h

Tags

TEKS.SCI.7.7A

A car travels 30 miles/hr for 3 hours, calculate the distance it will travel

• 90 miles
• 10 miles
• 600 miles
• 90 km

What is the speed of a man who runs 10 miles in 1 hr?

• 20 miles
• 10 m/min
• 10 miles/hr
• 20 hrs