Ch 5 - Newton's 3rd Law of Motion

Question 1

Interaction

Answer 1

is between one thing and another and requires a pair of forces acting on two objects.

Question 2

Newton’s Third Law of Motion

Answer 2

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first

Question 3

One force is called the action force and the other is called

Answer 3

the reaction force.

Question 4

ACTION and REACTION forces

Answer 4

are co-pairs of a single interaction and neither force exists without the other

Question 5

Newton’s Third Law of Motion

Answer 5

To every action there is always an opposed equal reaction.

Question 6

Action (object A)

Answer 6

Object A exerts a force on object B.

Question 7

Reaction (object B)

Answer 7

Object B exerts a force on object A.

Question 8

The same force exerted on a small mass produces

Answer 8

a LARGE acceleration.

Question 9

But the same force exerted on a large mass produces

Answer 9

a small acceleration.

Question 10

Newton’s 1st law of motion (the law of inertia)

Answer 10

“An object at rest tends to remain at rest; an object in motion tends to remain in motion at constant speed along a straight-line path.”

Question 11

Newton’s 2nd law of motion (the law of acceleration)

Answer 11

“When a net force acts on an object, the object will accelerate. The acceleration is directly proportional to the net force and inversely proportional to the mass.”

Question 12

Newton’s 3rd law of motion (the law of action & reaction)

Answer 12

“Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.”