Ch 26 - Motion

What is motion?

• A change in position relative to a frame of reference

• A change in direction only

• A change in mass

• A change in speed only

What does Newton's First Law of Motion state?

• An object in motion will eventually stop due to friction

• An object at rest will remain at rest and an object in motion will stay in uniform motion in the same direction unless a net force acts on it

• An object in motion will change direction randomly

• An object at rest will start moving on its own

What is speed?

• The direction of motion

• The force acting on an object

• The ratio between distance and time

• The mass of an object

How do you calculate average speed?

• Subtract distance from time

• Add distance and time

• Multiply distance by time

• Divide distance by time

What is velocity?

• Speed and direction of an object

• Mass of an object

• Acceleration of an object

• Distance and time of an object

What is acceleration?

• The rate of change of velocity per unit time

• The rate of change of mass per unit time

• The rate of change of speed per unit time

• The rate of change of distance per unit time

When a car speeds up near the finish line, what kind of change in velocity is observed?

• Change in speed

• Change in direction

• Change in mass

• Change in time

What is the formula for acceleration?

• a = V2 / V1 x t

• a = V2 - V1 x t

• a = V2 + V1 x t

• a = (V2 - V1) / t

What does Newton's Second Law of Motion describe?

• How acceleration, mass, and force are related

• How speed and distance are related

• How time and velocity are related

• How direction and acceleration are related

For every action, there is an equal and opposite reaction. Which law of motion does this statement represent?

• Newton's First Law

• Newton's Fourth Law

• Newton's Second Law

• Newton's Third Law