Moving about

Slide 2

…and off our roads.

1. Constant speed.

The concept of “speed”

Measuring speed

Changes in speed ...

Possible exercises: I

Possible exercises: II

Possible exercises: III

Speed Changes

Vectors and scalars

Examples of vectors

Speed and velocity


Velocity & displacement

Relative motion

Frames of reference

2. External forces 

F = ma




Addition of vectors

Forces on a car

Forces on a car


Coefficient of friction

Coefficient of friction


Possible exercises IV

Rolling resistance

Rolling resistance

Rolling resistance

Aerodynamic drag

Drag coefficient

Slide 37

Slide 38

Minimising drag 

Other forms of drag


Possible exercises: V

3. Understanding motion

Kinetic Energy

Energy transformations

Conservation of energy

Coast-down tests

4. Change of momentum 

Newton’s third law


Change of momentum


From which it is ...

Possible exercises: VI

5. Safety devices

Newton’s first law

Crash testing

Possible exercises: VII

Possible Exercises: VIII

Slide 60

Further modifications

Further modifications II


NRMA crash testing

NRMA crash testing

NRMA crash testing

Seat belts

6.  motion and forces 

And not just on the earth

What have we left out?

And we could usefully

Digital data loggers

Bike computers


Slide 75

Possible exercises: IX

Further questions

Possible exercises: X

The General Motors EV-1

The Aurora 

Slide 81

Possible exercises: XI

Human-powered vehicle:

Solar car: 

Edible car

Slide 86

Slide 87

Energy consumption

Slide 89

Slide 90

Slide 91

My favourite books, I

My favourite books, II

My favourite books, III

My favourite books, IV

Other resources