Speed

• Define speed as a scalar quantity that does not involve direction.
• Explain that the speed of a moving object is rarely constant and relies on factors such as age, terrain, fitness, and distance travelled.
• Recall typical speed values for everyday motion: walking (~1.5 m/s), running (~3 m/s), and cycling (~6 m/s), as well as general expectations for various transportation systems.
• Recognize that the speed of sound in air (typically 330 m/s) and wind speed also vary.
• Measure distance and time practically to calculate the speeds of various objects.
• Calculate the distance travelled by an object moving at a constant speed using the equation:

$s = v t$

• Identify the units for distance (metres, m), speed (metres per second, m/s), and time (seconds, s).