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SP2 Physics - Coggle Diagram
SP2 Physics
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resultant forces
vector and scalars
scalars are quantities that only show size e.g. time, distance travelled and energy
vector quantities show size and direction e.g. velocity, weight momentum and displacement
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When an object is subject to several forces, the resultant force is the force that alone produces the same acceleration as all those forces.
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newtons second law
the vector sum of the forces F on an object is equal to the mass m of that object multiplied by the acceleration a of the object: F = ma
the mass of a body as determined by the second law of motion from the acceleration of the body when it is subjected to a force that is not due to gravity.
To observe changes in motion due to changes in force and measure force, mass and acceleration, and examine their influence on motion.
To investigate the relationship between the variables; mass, force and acceleration and determine an inertial mass through the use of a trolley, ticker-timer and set of slotted masses.
newtons 1st law
the law of inertia means that the initial peddling of a bicycle allows it to continue once the pedalling has stopped
centripetal force is a force by which bodies are drawn or impelled, or in any way tend, towards a point as to a centre
in an inertial frame of reference, an object either remains at rest or continues to move at a constant velocity, unless acted upon by a force
newtons third law
When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
a bouncing ball going down is an action force whereas the opposite force from the ground is the reaction force
