Chapter 4: Dynamics II

Question 1

What is Newton’s First Law of Motion?

Answer 1

Every object will continue in its state of rest or uniform motion in a straight line unless a resultant force acts on it.

Question 2

What is inertia?

Answer 2

The inertia of an object refers to the reluctance of the object to change its state of rest or motion, due to it’s mass

Question 3

What is Newton’s Second Law of Motion?

Answer 3

When a resultant/net force acts on an object of a constant mass, the object will accelerate in the direction of the resultant force.

F = ma

Question 4

What is Newton’s Third Law of Motion?

Answer 4

If body A exerts a F(AB) on body B, then body B will exert an equal and opposite force(BA) on body A.

for every action (force) in nature there is an equal and opposite reaction.

Question 5

What is friction?

Answer 5

Friction is the contact force that opposes or tends to oppose motion between surfaces in contact

Question 6

What is terminal velocity?

Answer 6

When air resistance acting against an object equals it weight, the object starts to travel at a constant speed known as terminal velocity