Newton's Laws

Which of the following is an example of balancing forces?

• A Book resting on the table.

• A pencil is knocked off the desk.

What is Newton's 1st Law?

• For every action there is an equal and opposite reaction.

• An object at rest will stay at rest, an object in motion will stay in motion, unless an unbalanced force acts upon it.

What is Newton's 2nd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

What explains why objects resist changes in their state of motion?

• gravity

• inertia

• force

• friction

What explains a quantity that has BOTH speed and direction?

• Inertia

• Force

• Speed

• Velocity

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

• in a circle

• a wave like manner

• the same direction

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

• Friction

• Gravity

• Inertia