Week 4 - Linear Kinetics

Question 1

Define inertia

Answer 1

Reluctance of a body to change its state of motions

Question 2

What is mass

Answer 2

Quantity of matter in a body

Question 3

How does mass relate to inertia

Answer 3

Large mass = large inertia

Question 4

Equation for linear momentum

Answer 4

Mass x velocity

Question 5

Define force

Answer 5

A force can be considered as the pushing or pulling that one object exerts on another

Question 6

What two forces create translational movement

Answer 6

Internal forces
External forces

Question 7

State Newton’s first law

Answer 7

Object remains at rest or at constant motion unless acted on by a net force

Question 8

What is Newton’s second law

Answer 8

Rate of change of momentum of a body is proportional to the force causing it and change takes place in direction the force acts

Question 9

What is Newton’s third law

Answer 9

For every action there is a reaction force equal in magnitude but opposite in direction

Question 10

Name 4 common forces

Answer 10

Weight
Drag
Friction
Ground reaction

Question 11

What is weight

Answer 11

The force due to gravity