Interpreting line graphs - Race for the Line

1. INTEPRETING LINE GRAPHS

2. Line graphs can tell stories
Engineers and designers often
use line graphs to help to
understand and share how
their machines and inventions
work and perform.
INTEPRETING LINE GRAPHS

3. INTEPRETING LINE GRAPHS
Look at the graph for the Estes B6:0 rocket
motor used in Race For The Line cars.
• How log does it burn for (seconds)?
• What is the maximum thrust (newtons)?
• How long does it take for the rocket to
reach maximum thrust?
• Can you explain what happens between
0.2 and 0.4 seconds?

4. INTEPRETING LINE GRAPHS
This graph shows the predicted velocity
(speed) of the Bloodhound SSC car at
different distances along the track.
How far away from the start line will it
reach maximum speed?
The Bloodhound SSC has two main
engines: a Jet engine and a rocket motor.
How far from the start do you think the
rocket motor starts? Explain.
How many miles does it take to bring
Bloodhound SSC to a halt in this
predicted run?

5. This performance graph predicted
for Bloodhound SSC car is more
complicated. It has two Y axes. The
blue is for Velocity (the speed) and
the red one for Acceleration (the G-
force you feel when a car
accelerates or brakes).
• What is the planned top speed of
Bloodhound SSC?
• What is the maximum G force the
driver will feel? (look carefully)
Can think of another question to
ask using this graph?
INTEPRETING LINE GRAPHS

6. INTEPRETING LINE GRAPHS
Using the evidence in the graph below that shows speed and acceleration (G force),
describe what the driver Andy Green will be feeling and doing at different times.

7. RACE FOR THE LINE