1. Acceleration

2. Quick Quiz How is a stationary object shown on a distance/time graph?
horizontal line
How can you tell which part of a journey shown on a distance/time graph has the highest speed?
steepest line

3. Quick Quiz
3 How can you calculate velocity from a distance/time graph?
gradient of line
What does acceleration mean?
change in velocity in time
What are the units for acceleration?
metres per second squared

4. Quick Quiz In the acceleration formula, what does u stand for?
initial velocity
In the acceleration formula, what does v stand for?
final velocity
What is the formula for calculating acceleration?
change in velocity/time, or (v – u) ÷ t

5. Quick Quiz What is the acceleration due to gravity?
10 m/s2 to 1 sig. fig or 9.8 m/s2 to 2 sig. fig
What is the maximum horizontal acceleration students are likely to experience in everyday life?
about 1.5 m/s2 (average family car)