Unit 2 Dynamics

An object that is already in motion will stay in motion (in a straight line path) an object at rest will stay at rest unless an unbalanced force acts on the object.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

Whatever alteration is made of the net force, the same change will occur with the acceleration.

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

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

Which law is called the law of inertia?

• Newton's first law of motion

• Newton's second law of motion

• Newton's third law of motion

Balanced forces have...

• Net forces

• No net forces

Unbalanced forces have...

• Net forces

• No net forces

What kind of force is the vector sum of all the forces?

• Net force
• Acceleration

• Normal Force

• Frictional force

Action and reaction forces are equal and opposite to each other.

• False

• True

What is the unit of force?

• Jules

• Newtons

• Kg

• Amperes

Are action-reaction forces balanced?

• Yes

• No