Linear Motion + Forces

Question 1

For linear motion to occur, direct force must applied to where?

Answer 1

Directly in the centre of mass

Question 2

Determine the difference between distance and displacement

Answer 2

Distance= Start to finish
Displacement= How far from start

Question 3

True or false?

Displacement is from start to finish

Answer 3

False

How far from the start

Question 4

Linear forces can be split into what 2 categories?

Answer 4

Internal + External

Question 5

Name all 3 external forces

Answer 5

Frictional
Weight
Air resistance

Question 6

Describe 2 things about weight as an external force

Answer 6

It is in the form of gravitational pull
The higher mass, the higher gravitational pull

Question 7

Internal muscular force is an example of what type of force and in what context?

Answer 7

Internal linear force

Question 8

State an example of an internal muscular force

Answer 8

Quadriceps concentrically contract

Question 9

What is the value of Gravity and what are its units?

Answer 9

9.81 m/s -1