Upload
pembroke
View
30
Download
0
Tags:
Embed Size (px)
DESCRIPTION
MOVEMENT AND CHANGE. - a PHYSICS module. SPEED. SPEED. Defined as – distance travelled in a certain time s = d / t Distance usually measured in metres; time in seconds; speed in metres per second. SPEED. m / s or in science more usually expressed as m s -1. SPEED. - PowerPoint PPT Presentation
Citation preview
MOVEMENT AND CHANGE
- a PHYSICS module
SPEED
SPEED
Defined as – distance travelled in a certain time
s = d / t
Distance usually measured in metres; time in seconds; speed in metres per second
SPEED
m / s
or in science more usually expressed as
m s-1
SPEED
Tells us nothing about the direction travelled in
Is usually an “average” value (unless measured and recorded every second!)
A journey – as a table
Time (mins) Distance travelled (km)
016710162225
02202048606028
A Journey
Present this journey as a distance time graph Q1 What assumptions have you made in
plotting this graph? Q2 Describe the journey depicted on the
graph with explanations of what happened in each part.
A Journey
Q4 Use the gradient method to calculate the speed from 22 minutes to 25 minutes.
Q5 Use the gradient method to calculate the speed from 10 minutes until 16 minutes.
Speed vs Velocity
Read p125 of the PHYSICS text. Write a note to define and explain what
VELOCITY is and how it has a different meaning to speed.