3.5 - Newton's Laws of Motion

Question 1

What is Newton’s First Law?

Answer 1

A body will remain at rest or continue to move in a straight line at a constant velocity unless an external force acts on it

Question 2

What is Newton’s Second Law?

Answer 2

The resultant force on an object is proportional to the rate of change of momentum of the object.

F = p/t

Question 3

What is Newton’s Third Law?

Answer 3

If object A exerts a force on object B, the object B will exert an equal and opposite force on object A

Question 4

What is the Principle of Conservation of Momentum?

Answer 4

It states that the total momentum before a collision is always equal to the total momentum after the collision, provided that no external forces are involved

Question 5

What is an Elastic Collision?

Answer 5

A collision in which the momentum and kinetic energy are conserved

Question 6

What is an Inelastic Collision?

Answer 6

A collision in which momentum is conserved but some of the kinetic energy is transferred to other forms in the collision