7.7ABCD Understanding Motion and Forces Review

Zoe is driving her car on a road trip. She travels a distance of 150 kilometers in 3 hours. Calculate her average speed.

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

Grace is driving her car on a highway. Which of the following best describes her car's velocity?

• Speed in a given direction

• Distance covered per unit time

• Total distance traveled

• Time taken to travel a distance

Anika drives her car and covers a distance of 100 meters in 5 seconds. What is her average speed?

• 15 m/s

• 20 m/s

• 25 m/s

• 30 m/s

Tags

NGSS.MS-PS3-1

Lily is driving her car at a constant speed. What will the distance-time graph of her journey look like?

• A horizontal line

• A vertical line

• A straight line with a positive slope

• A curved line

Grace is timing her morning jog and wants to determine her speed from a distance-time graph. How can she do this?

• By finding the area under the graph

• By calculating the slope of the graph

• By measuring the height of the graph

• By counting the number of data points

Tags

NGSS.MS-PS3-1

According to Newton's First Law of Motion, what happens to a book lying on a table if no unbalanced force acts on it?

• It will start moving.

• It will remain at rest.

• It will change direction.

• It will accelerate.

What effect do balanced forces have on an object in motion?

• They cause the object to accelerate.

• They change the direction of the object.

• They keep the object moving at a constant speed.

• They stop the object.

Mia cycles to her friend's house, covering a distance of 30 km in 2 hours. What is Mia's average speed?

• 10 km/h

• 15 km/h

• 20 km/h

• 25 km/h

Which of the following scenarios describes a change in velocity?

• A car traveling at 60 km/h on a straight road

• A cyclist moving at a constant speed around a curve

• A train moving at a constant speed on a straight track

• A runner maintaining a steady pace on a straight path

Abigail is watching a car parked on the street. What does a horizontal line on a distance-time graph indicate about the car's motion?

• The car is accelerating.

• The car is moving at a constant speed.

• The car is at rest.

• The car is decelerating.