1. Kinematics ( Definitions) Aims 1)Be able to recall the definitions of displacement, instantaneous speed, average speed, velocity & acceleration. 2)Be able to describe the difference between displacement and distance. 3) Compare and contrast average speed cameras and GATSOs

2. Displacement The distance travelled in a certain direction. Scale Drawings Kinematics ( Definitions) 300m ( 3cm) 100m ( 1cm)

3. Instantaneous Speed Instantaneous speed is the speed at an instant in time. Kinematics ( Definitions) Distance Time

4. Average Speed Average speed is the distance travelled by an object divided by the time taken to travel that distance. Kinematics ( Definitions) S = d/t

5. 1)Find the definitions for Velocity & Acceleration. 2)What is the difference between average speed cameras & GATSO’s ? Kinematics ( Definitions)

6. Aims 1.Be able to apply graphical methods to represent displacement, speed, velocity and acceleration; 2. Be able to determine velocity from the gradient of a displacement against time graph; 3. Be able to determine displacement from the area under a velocity against time graph; 4. Be able to determine acceleration from the gradient of a velocity against time graph. Kinematics ( Graphs)

8. Aims 1) Derive the equations of motion for constant acceleration in a straight line from a velocity against time graph. 2)Be able to select and use the equations of motion for constant acceleration in a straight line. 3) Apply the equations for constant acceleration in a straight line. Kinematics ( Equations of Motion)

9. U V t 0 0

10. 0 10m/s t 0 4s 0 t 0 5s Slope = 3m/s 2 Slope = ?

11. Kinematics ( Equations of Motion) v = u + at When do we use this to solve problems ? 1) A car starts from rest and accelerates at 2m/s2 for 4 seconds. What will its final velocity be ? 2) A car accelerates from 15m/s to 25 m/s in 10 seconds. What is its acceleration? 3) How long will it take a car to accelerate at 5m/s2 from 10m/s to 32m/s ?

12. Kinematics ( Equations of Motion) s =½(u + v)t When do we use this to solve problems ? 1) How far will a car travel when it accelerates from 8m/s to 20m/s in 8 seconds. ?

13. Kinematics ( Equations of Motion) v 2 =u 2 + 2as When do we use this to solve problems ? 1) A car starts from rest and accelerates at 2m/s 2 for 4 seconds, it covers 120m in this time. What will its final velocity be ? 2) A car decelerates from 30m/s to 10 m/s.It covers a distance of 150m whilst doing this. What is its deceleration? 3) How far will a car travel when it accelerates at 2m/s 2 and increases its velocity from 17m/s to 34m/s.

14. Kinematics ( Free Fall) 1) Apply the equations for constant acceleration to examine the motion of bodies falling in the Earth’s uniform gravitational field without air resistance; 2) Explain how experiments carried out by Galileo overturned Aristotle’s ideas of motion. 3) Describe an experiment to determine the acceleration of free fall g using a falling body;

15. Kinematics ( Free Fall) What does this image tell us about an object in Free Fall ? What graphs could we plot ? What calculations could we do ?

16. Kinematics ( Free Fall) TimeHeightDisplacement 0.0020.000.00 0.2019.800.20 0.4019.210.79 0.6018.251.75 0.8016.963.04 1.0015.374.63 1.2013.536.47 1.4011.488.52 1.609.2610.74 1.806.9013.10 2.004.4315.57 2.201.8818.12 TimeVelocity 0.000.0 0.20-2.0 0.40-4.0 0.60-6.0 0.80-8.0 1.00-10.0 1.20-12.0 1.40-14.0 1.60-16.0 1.80-18.0 Use the data below to plot 3 graphs. What do the graphs show?

17. Kinematics ( Free Fall)

18. Aristotle and Galileo Explain how experiments carried out by Galileo overturned Aristotle’s ideas of motion. Include a description of the inclined plane experiment. GalileoAristotle

19. What we have Covered Kinematics

20. What we have Covered Linear Motion