# Rocket Science Ideas in context

2011 Ideas in context Physics.

How to interpret the graphs.

## Slides in this set

### Slide 1

Twenty First Century

Science

Additional science.

Unit 4 ideas in

context (higher tier)

Weight = 90N

Mass = 90N

= 9 Kg

10N

Gravity 9.81 ms² Round to 10…read more

### Slide 2

Describing the

graph

If you get a question asking you to describe the rockets journey just brake the graph up in to equal sections and describe what you think the graph is showing in this

section.

Distance time Almost stationary

graph! 400

0

350

0 Starting to slow down.

300

0 Max hight at 3750

Still slowing down

Height in M 2500

200

0

Threw out all the graph the

1500

rocket is decreasing in weight

Greatest distant moved threw

1000 out the graph due to loss of fuel and there for

Stationary on the speeds up as the is less

ground 500 downwards force on the rocket.

lighter rocket, quicker speed

higher up = Less gravity

0 5 10 15

2

Time in seconds0

2

5

3

0

Rocket is heavy + Steeper gradient

Gravity strong.

Rocket speeding up.

Not draw accurately…read more

### Slide 3

Describing the

graph

If you get a question asking you to describe the rockets journey just brake the graph up in to equal sections and describe what you think the graph is showing in this

section.

2250

Distance time

200 3.5s No Longer Needs To Thrust

graph!

0

1750 Gaining Momentum

1500

Thrust in N Less

1250

Starts Timing Time To

1000 Decrees

Thrust 750

500

250 No Thrust Applied Gravity Is

No fuel.

Reduced

Gravity 0 5 10 15

2

Time in seconds0

2

5

3

0

Not draw accurately…read more

### Slide 4

Describing the

graph

If you get a question asking you to describe the rockets journey just brake the graph up in to equal sections and describe what you think the graph is showing in this

section.

Distance time

graph! Highest

point.

350

300

250

d.

As

spee

sp

ee

dd

ly.

200 ec

slow

rea

Incre thrust+

se

ss

150 od

asing

os

e th

g

ea

100

osin

ir r

es

Not moving ist

an

Opp

no counter ce

50 .

force to

thrust.

0 5 10 15

2

Time in seconds0

2

5

3

0

At six seconds the air resistance is at its highest. This is because on the first

graph if you draw gradients at six seconds the gradient is at is steepest.

There for the air resistance is counteracting this and is at its peek at 6

seconds.

Not draw accurately…read more

### Slide 5

Equations you may need

to know.

Change In Momentum=

Kinetic Energy= 1/ 2×Mass×[Velocity]² Resultant Force × Time for which

Speed = Distance ÷ Time it acts

[Velocity]²=Kinetic Energy

Distance =Speed×Time Resultant Force =Change In

1/ 2×Mass

Momentum÷ Time for which it

Velocity=Kinetic Energy

Time = Distance ÷Speed acts

1/ 2×Mass

Time for which it acts=Change In

Momentum÷ Resultant Force

Momentum= Mass× Velocity Work Done = Force ×Distance Change in GPE= Weight ×

Vertical Hight Difference

Mass=Momentum÷Velocity Force = Work Done÷Distance

Weight =Change in GPE÷

Vertical Hight Difference

Velocity = Momentum ÷ Mass Distance = Work Done ÷ Force

Vertical Hight Difference

=Change in GPE ÷ Weight…read more

### Slide 6

Content Of Article

Rocket Thrust, Weight and Air Resistance

Looking at how the graphs are related to each

other and how each one effects the performance

of the rocket.

How different aspects are changed due to the fuel

content.…read more

### Slide 7

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