Exploring Position, Velocity, and Acceleration Concepts

What is the definition of position in physics?

• The change in position over time

• The change in velocity over time

• The speed of an object

• Where an object is in space

How is velocity defined?

• The distance traveled by an object

• The change in speed over time

• The direction of an object's motion

• The change in position over time

What is the difference between distance and displacement?

• Distance includes direction, displacement does not

• Distance is a scalar, displacement is a vector

• Distance is a vector, displacement is a scalar

• Distance is always shorter than displacement

Using the Pythagorean theorem, what is the displacement if you walk 20 meters down the street and 7 meters up the driveway?

• 27 meters

• 20 meters

• 7 meters

• 21.2 meters

What is the main difference between speed and velocity in physics?

• Speed is a vector, velocity is a scalar

• Speed is always greater than velocity

• Speed includes direction, velocity does not

• Speed is a scalar, velocity is a vector

How do you calculate average speed?

• By subtracting initial speed from final speed

• By multiplying distance by time

• By dividing distance by time

• By dividing displacement by time

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What is acceleration?

• The distance traveled by an object

• The change in speed over time

• The change in position over time

• The change in velocity over time

What happens to the velocity vector of a marble as it slows down?

• It points backward and increases in magnitude

• It points forward and decreases in magnitude

• It points forward and increases in magnitude

• It points backward and decreases in magnitude

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What direction does the acceleration vector point when a marble is slowing down due to friction?

• In the positive direction

• In the direction of motion

• In the negative direction

• Perpendicular to the direction of motion

What happens to the displacement vector as a marble rolls to a stop?

• It disappears

• It shortens

• It elongates

• It changes direction