It is very useful to be able to make predictions about the way moving objects behave.This text will be more use to you ,to have a simple idea about the way that objects move with depending the speed and acceleration.
Speed
what is speed?
Speed is the term used a great deal in everyday life.For example if you were told a car travelled 100 km s in 2 hours you would probably have no difficult in working out that the speed of the car was 50km/h .You would done a simple calculation using the following equation related to speed.
Speed=Distance
Time taken
This is usually written using the symbol v for velocity.d for distance travelled and t for time
v = d
t
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