Forces and Motion Lessons 1-2 (2024)

What is motion defined as in physics?

• A change in velocity over time

• A change in position relative to a reference point

• The speed of an object in a straight line

• The acceleration of an object due to gravity

Tags

NGSS.MS-PS3-1

Which of the following best describes a balanced force?

• A force that causes an object to change its speed

• A force that causes an object to change its direction

• A force that results in no net change in an object's motion

• A force that always acts in the direction of gravity

How does an unbalanced force affect an object's motion?

• It causes the object to remain at rest

• It causes the object to move at a constant speed

• It causes the object to change its velocity

• It has no effect on the object's motion

Tags

NGSS.MS-PS2-2

What is the difference between speed and velocity?

• Speed is faster than velocity

• Velocity includes direction, while speed does not

• Speed is always measured in meters per second

• Velocity is always constant, while speed can change

Which of the following is a correct unit for acceleration?

• Meters (m)

• Meters per second (m/s)

• Meters per second squared (m/s²)

• Kilometers per hour (km/h)

How is average speed calculated?

• Distance divided by time

• Time divided by distance

• Velocity multiplied by time

• Acceleration divided by time

On a distance-time graph, what does a horizontal line represent?

• Increasing speed

• Decreasing speed

• Constant speed

• An object at rest

If an object's speed is increasing at a constant rate, what type of line would you expect to see on a speed-time graph?

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Tags

NGSS.MS-PS3-1

What does the slope of a line on a distance-time graph represent?

• Acceleration

• Speed

• Distance

• Time

Which of the following scenarios describes an object with constant velocity?

• A car speeding up on a highway

• A ball rolling down a hill

• A satellite orbiting Earth in a circular path

• A rock falling from a cliff