Download P2a specification checklist file

P2a Specification Checklist
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Motion
To be able to construct distance-time graphs for the motion of an object
To be able to construct velocity-time graphs for the motion of an object
HT: Can calculate speed from the slop of a distance-time graph
HT: Can calculate acceleration from the slop of a velocity-time graph
HT: To be able to calculate distance travelled from a velocity-time graph
To know that velocity is speed in a given direction
To know that the acceleration of a body is determined by the change in velocity/ time
Change in motion
To know that when a body reaches terminal velocity all the forces are balanced
To be able to calculate weight (W=mg)
To know that whenever two bodies interact, the forces they exert on each other are equal and opposite.
To know that when multiple forces are acting on a body the resultant is the one that effects the motion
To know that if the resultant force acting on a stationary object is zero the object will remain stationary.
To know that if the resultant force acting on a stationary body is not zero the body will accelerate in the
direction of the resultant force.
To know that if the resultant force acting on a moving body is zero the body will continue to move at the
same speed and in the same direction.
I Can use the F=ma equation
To know that for a vehicle travelling at constant speed frictional forces must balance out driving forces
To know that the stopping distance of a vehicle depends on the distance the vehicle travels during the
driver’s reaction time and the distance it travels under the braking force.
To know what factors affect the driver’s reaction time
To know what factors affect the breaking distance
To know that the faster a body moves through a fluid the more frictional force acting on it
To know that when the brakes of a vehicle are applied, work done by the friction reduces the KE and heats
up the brakes.
The energy involved and elasticity
To know that a force acting on an object may cause a change in the shape of the object.
To know a force applied to an elastic object such as a spring will result in the object stretching and storing
elastic potential energy
To know the extension of an elastic object is directly proportional to the force applied provided the lime of
proportionality is not exceeded.
To know that when a force causes a body to move through a distance, energy is transferred and work is
done.
To know that work done against frictional forces is mainly transformed into heat.
To know that for an object that is able to recover its original shape, elastic potential is the energy stored in
the object when work is done on the object to change its shape.
To know that kinetic energy depends on the mass and speed of the object
HT: To be able to calculate the kinetic energy of an object
To know that power is the work done in a given time P=E/t
Gravitational potential energy is the energy that an object has by virtue of its position in a gravitational
field. GPE=mgΔh
Momentum
To know how to use the conservation of momentum to calculate values for a collision
Can use momentum to explain safety features
Can evaluate the benefit of different brakes and road safety devices
Know how to calculate momentum from the equation
To know that in momentum both magnitude and direction matter
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