Physics Worksheet

Match each definition with the correct term: combination of all the forces acting on an object.

• friction

• combination of all the forces acting on an object

• net force

• Force that opposes the motion of any object

• mass

• Factor that determines the inertia of an object

• inertia

• Tendency of an object to resist a change in motion

Determine if the following statement is true or false: Inertia is the tendency of an object to resist motion.

• True

• False

Determine if the following statement is true or false: Newton’s first law of motion is also called the law of acceleration.

• True

• False

Determine if the following statement is true or false: If an object is at rest, inertia will keep it at rest.

• True

• False

Determine if the following statement is true or false: The speed of an object changes only when it is acted on by an unbalanced force.

• True

• False

Determine if the following statement is true or false: When you are moving at a high rate of speed, having a larger mass makes it harder to stop.

• True

• False

Determine if the following statement is true or false: Newton’s first law of motion applies only to objects that are already moving.

• True

• False

Gravity is a (a)   .

• velocity

• speed

• force

• weight

If an equal force acts on each of the following objects, which will have the greatest acceleration?

• a golf ball

• a soccer ball

• a football

• a baseball

Inertia explains why (a)   .

• friction can be overcome for all objects

• people in a car move forward in their seats when the car stops quickly

• gravitational forces are stronger on Earth than on the Moon

• the ground pushes against your feet when you run.