## Chapter Topics:

Speed, velocity and acceleration
Graphical analysis of motion
Free-fall
Effect of air resistance

## Learning Objectives:

(a) State what is meant by speed and velocity.

(b) Calculate average speed using distance travelled / time taken.

(c) State what is meant by uniform acceleration and calculate the value of an acceleration using change in velocity / time taken.

(d) Interpret given examples of non-uniform acceleration.

(e) Plot and interpret a displacement-time graph and a velocity-time graph.

(f) Deduce from the shape of a displacement-time graph when a body is:
(i) at rest
(ii) moving with uniform velocity
(iii) moving with non-uniform velocity

(g) Deduce from the shape of a velocity-time graph when a body is:
(i) at rest
(ii) moving with uniform velocity
(iii) moving with uniform acceleration
(iv) moving with non-uniform acceleration

(h) Calculate the area under a velocity-time graph to determine the displacement travelled for motion with uniform velocity or uniform acceleration .

(i) State that the acceleration of free fall for a body near to the Earth is constant and is approximately 10 m/s².

(j) describe the motion of bodies with constant weight falling with or without air resistance, including reference to terminal velocity.