Understanding Speed and Forces Quiz

A car travels 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

Which of the following best describes the difference between speed and velocity?

• Speed includes direction, while velocity does not.

• Velocity includes direction, while speed does not.

• Speed and velocity are the same.

• Speed is always greater than velocity.

A runner completes a 400-meter lap in 50 seconds. What is the runner's average speed in meters per second?

• 6 m/s

• 7 m/s

• 8 m/s

• 9 m/s

Tags

NGSS.MS-PS3-1

If a car travels 100 meters north and then 100 meters south, what is the car's displacement?

• 0 meters

• 100 meters

• 200 meters

• 50 meters

Which graph best represents an object moving at a constant speed?

• A straight horizontal line

• A straight line with a positive slope

• A curved line

• A straight line with a negative slope

A cyclist travels 30 kilometers in 2 hours. What is the cyclist's average speed in kilometers per hour?

• 10 km/h

• 15 km/h

• 20 km/h

• 25 km/h

What happens to an object when balanced forces act on it?

• The object speeds up.

• The object slows down.

• The object changes direction.

• The object remains at rest or moves at a constant speed.

Tags

NGSS.3-PS2-1

A car travels 60 km east and then 40 km west. What is the car's total displacement?

• 20 km east

• 100 km east

• 20 km west

• 100 km west

Which of the following graphs shows an object that is accelerating?

• A straight horizontal line

• A straight line with a positive slope

• A curved line

• A straight line with a negative slope

Tags

NGSS.MS-PS3-1

A train travels 120 kilometers in 1.5 hours. What is the train's average speed in kilometers per hour?

• 60 km/h

• 70 km/h

• 80 km/h

• 90 km/h