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3. Speeding up through space–time:
acceleration
In Unit 2 you learnt about:
✔ the difference between distance and
A Proton-M rocket was successfully displacement
launched from Baikonur cosmodrome ✔ types of trajectories Physics
textbooks nis edu kz
on 19 March 2015. What can be said ✔ graphical representation of uniform motion
about the type of motion of the rocket
from the moment it launches until In Unit 3 you will learn:
it reaches the upper atmosphere ✔ the concepts of average speed and
in Space? acceleration
✔ the difference between uniform and non-
uniform motion
✔ ways of calculating distance and acceleration
using speed vs. time graphs
✔ the principles of road safety
Key phrases:
✔ To calculate average speed you should …
✔ When an object is at rest, its speed …
✔ If an object accelerates uniformly, its velocity …
✔ If a body decelerates uniformly, its velocity …
CCL In Maths classes you learnt how to
calculate areas of rectangles and triangles. These
skills will help you in Physics when calculating
distances using speed vs. time graphs.
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