You should create notes on the following:
  • How do you calculate speed, distance and time (include the method used to calculate each and the formula triangle)
  • How to calculate acceleration, change in speed and change in time (include the method used to calculate each and the formula triangle)
external image Newton_II_3.GIFexternal image deltaPDeltaT_html_m72123c04.gif
Force= Mass x Acceleration
Acceleration= Force/Mass
Mass= Acceleration/Force

To calculate the force, you need to multiply the mass by the acceleration.
To calculate the acceleration, you need to divide the force by the mass
To calculate the mass, you need to divide the acceleration by the force.


  • How do you convert the mass of an object the the weight of an object on Earth
g_dst_triangle.gif
In order to calculate the speed, you must divide the 'distance' by the 'time'
In order to calculate the distance traveled, you need to multiply the 'speed' by the 'time' taken
To find the time taken, you must divide the 'distance' traveled by the 'speed'

For example:

If a Ferrari travelled 300 metres in 10 seconds, what was his speed?
300m= 30 m/s
10s

If Usain Bolt ran 60m at a speed of 12m/s, what was his time?
60m= 5 seconds
12s

If a cheetah was running at a speed of 15m/s for 15 seconds, how far did he/she travel?
15m/s x 15s= 225m

To calculate the acceleration of something, you must divide the 'change in speed' by the 'change in time'
To find the the change in speed, you need to multiply the 'acceleration' by the 'change in time'
When needing to find the change in time, one must divide the 'change in speed' by the 'acceleration' rate


To convert mass(Newton) of an object to the weight of an object on Earth(Kg), all you have to do is divide the number of Newtons by 10 then you will get the weight. e.g. Mass of "Bob" is 700 Newtons, what is his weight?
700 divided by 10 = 70kg.
Answer: Bob is 70kg on Earth.