PS.7.1.2 - Newton's Laws & Forces

What is the definition of force?

• The amount of matter in an object

• A push or a pull

• The speed of an object

• The color of an object

Which law states that for every action there is an equal and opposite reaction?

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

• Law of gravity

What is the force that opposes motion between two surfaces that are in contact?

• Gravity

• Friction

• Magnetic force

• Inertia

What do we call the tendency of an object to resist a change in motion?

• Inertia

• Gravity

• Friction

• Mass

Which type of friction acts on objects that are not moving?

• Rolling friction

• Fluid friction

• Static friction

• Kinetic friction

If two equal forces act on an object in opposite directions, what type of force is this?

• Unbalanced force

• Balanced force

• Applied force

• Magnetic force

A ball is rolling on the ground and eventually comes to a stop. Which force is mainly responsible for stopping the ball?

• Gravity

• Friction

• Magnetic force

• Inertia

According to Newton's second law of motion, what happens to the acceleration of an object if the force applied increases but the mass stays the same?

• Acceleration decreases

• Acceleration stays the same

• Acceleration increases

• Acceleration becomes zero

Which scenario best demonstrates Newton's first law of motion?

• A book stays at rest on a table until someone pushes it.

• A magnet attracting a paperclip.

• A ball rolling faster as it goes downhill.

• A balloon sticking to a wall after being rubbed.

Which of the following is an example of fluid friction?

• A car tire rolling on a road

• A book resting on a table

• A swimmer moving through water

• A magnet repelling another magnet