PS.FM.1: Motion

What is motion?

• The change in an object's position

• The speed of an object

• The direction of an object

• The mass of an object

What is a vector?

• A quantity with both size and direction

• A scalar quantity

• A unit of speed

• A type of graph

How is speed calculated?

• Distance divided by time

• Time divided by distance

• Distance multiplied by time

• Speed divided by time

What does a car speedometer measure?

• Instantaneous speed

• Average speed

• Displacement

• Velocity

What axis is time plotted on in a distance-time graph?

• Horizontal axis

• Vertical axis

• Diagonal axis

• Circular axis

What can change velocity?

• Change in speed or direction

• Change in mass

• Change in color

• Change in temperature

What is acceleration?

• The change in speed over time

• The change in velocity divided by the time it took for the change to occur

• The change in direction over time

• The change in distance over time

What happens when acceleration and velocity move in the same direction?

• Speed decreases

• Speed remains constant

• Speed increases

• Speed becomes zero

What is the formula for average acceleration?

• (final velocity - initial velocity)/(final time - initial time)

• (initial velocity - final velocity)/(final time - initial time)

• (final velocity + initial velocity)/(final time + initial time)

• (initial velocity + final velocity)/(final time - initial time)

What does a positive acceleration indicate on a speed-time graph?

• Negative slope

• Zero slope

• Positive slope

• Constant slope