ForcesPage 1

WATCH ALL SLIDES

Slide 1 FORCES

Is gravity real -

or does the Earth

just suck?

Slide 2 What do forces do?

Make things ----

move

move faster

move slower

change direction

also

change shape

Slide 3 Big and Little forces

We can measure forces

Using a forcemeter

Slide 4 Sir Isaac Newton

Slide 5 Which fruit ?

Slide 6 Newton?

Slide 7 Gravity is a force

When gravity pulls something towards the Earth -

- we call this force the weight.

Slide 8 Forces are measured in Newtons

Weight of an apple = about 1 Newton

Slide 9 Let’s play

a game !

Slide 10 Results

Slide 11 Forcemeters

Slide 12 Now another game!

Slide 13 Lifting a ping pong ball

.

straw

Suck !

Slide 14 ping pong ball falling

The arrow represents the force of gravity

Slide 15 The ball does not fall when your sucking force = force of gravity

How have I shown this ?

Slide 16 Which diagram shows the sucking force equal to the force of gravity?

gravity

gravity

Slide 17 The ball does not fall when your upward force = force of gravity

Slide 18 Gravity down under

People do not fall off the Earth

Slide 19 Go to page:
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