Firsrt 3 Modules of P2

These notes are based on the first 3 Modules of P2. I hope they are useful. :)

I have made notes on all the important stuff you need to know for the first three modules of P2. If you know these points then you can easily answer exam-style questions on these three modules.

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  • Created by: Rupesh
  • Created on: 12-12-12 20:29
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Distance Time Graphs:
The Gradient represents Speed
A Horizontal Line represents a stationary object
Object moving at constant speed is a straightline that slopes upwards
Velocity Time Graphs:
Gradient represents Acceleration
Horizontal Line represents Zero Acceleration
Area under the line = Distance
Key Terms:
Velocity is speed in a given direction (m/s)
Acceleration is the change in velocity per second (m/s2)
Deceleration is the change in velocity per second when an object slows down
Forces:
A force can change the shape of an object or its state of rest or its motion (N)
Resultant Force is a single force that has the same effect as all the other forces acting on the object
(N)
Zero Resultant Force:
If an object is at rest it remains stationary
If an object was moving it continues to move at the same speed and in the same direction
NonZero Resultant Force:
It depends on the size and direction of the force:
if an object's forces are equal then their difference = resultant force and it acts in the
direction of the larger force
If an object's forces are equal then their sum = resultant force and it acts in the same
direction.
Key Points:
The bigger the resultant force of an object, the greater the acceleration is.
The greater the mass of an object is, the smaller its acceleration.
F= ma whereby F= Force (N), m= Mass (kg), a= Acceleration (m/s2)

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On The Road:
Stopping Distance ­ is the shortest distance a vehicle can stop in.
Thinking Distance is the distance travelled by the vehicle in the time it takes the driver to react.
Braking Distance is the distance travelled by the vehicle during the time the braking forces acts.…read more

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Work = Energy Transferred by a force, given by: Work done (in Joules) = force in (Newton's) X
Distance moved in the direction of the force (in metres, m).…read more

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