What is the formula to calculate average speed?

If a car travels 150 kilometers in 3 hours, what is its average speed?

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

Which of the following best describes velocity?

• Speed in a given direction

• Distance covered per unit time

• The rate of change of speed

• The total distance traveled

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

• 6 m/s

• 7 m/s

• 8 m/s

• 9 m/s

Tags

NGSS.MS-PS3-1

How does velocity differ from speed?

• Velocity includes direction, while speed does not.

• Speed includes direction, while velocity does not.

• Both speed and velocity include direction.

• Neither speed nor velocity include direction.

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

Interpret the motion of an object from a distance-time graph where the line is horizontal.

• The object is moving at a constant speed.

• The object is accelerating.

• The object is decelerating.

• The object is stationary.

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

• The object accelerates.

• The object remains in its current state of motion.

• The object changes direction.

• The object decelerates.

Tags

NGSS.HS-PS2-1

Analyze the effect of unbalanced forces on an object at rest.

• The object will remain at rest.

• The object will start moving.

• The object will move in the opposite direction.

• The object will change shape.

Tags

NGSS.MS-PS2-2

A cyclist travels 30 km north and then 40 km east. What is the cyclist's displacement?

• 70 km

• 50 km

• 10 km

• 35 km