Exploring Speed, Velocity, and Acceleration Concepts

What happens to the average speed and velocity as the time interval decreases?

• They both approach zero

• Their difference increases

• They become equal

• No change occurs

What is the relationship between average speed and average velocity when the path is straight?

• They are always equal

• They are never equal

• Average speed is always higher

• They can be equal depending on the time

What is instantaneous velocity defined as?

• The speed of an object at a specific time

• The displacement divided by a very short time interval

• The total displacement divided by total time

• The average speed over a long distance

How can the instantaneous speed of a car be determined?

• By calculating the total distance over total time

• By timing how long it takes to travel a known distance

• By observing the car's speedometer

• By measuring the displacement at a specific time

How is the direction of instantaneous velocity determined?

• It is tangent to the trajectory at any point

• It is always in the direction of motion

• It is determined by the speedometer

• It is opposite to the direction of displacement

What does the Greek letter Delta (Δ) signify in physics?

• The initial value of a quantity

• The total distance traveled

• The change in a physical quantity

• The final value of a quantity

Tags

NGSS.HS-PS2-2

NGSS.HS-PS3-4

In a one-dimensional motion, how is displacement calculated?

• Final position minus initial position

• Total distance divided by time

• Initial position plus final position

• Average velocity times time

What does a positive displacement indicate in one-dimensional motion?

• The object moved in the negative direction

• The object returned to the starting point

• The object moved in the positive direction

• The object did not move

What does a negative average velocity indicate about the direction of motion?

• Motion perpendicular to the initial direction

• Motion in the positive direction

• Motion in the negative direction

• No motion

What does the magnitude of average velocity indicate in a journey?

• The speed per unit time

• The displacement per unit time

• The total distance divided by the time

• The total time taken for the journey