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Paper 2
Forces
Newton's Second Law
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Cards (9)
What is Newton's second law?
The
acceleration
of an object is
proportional
to the
resultant
force acting on the object and
inversely
proportional to the
mass
of the object
What happens to an object if its resultant force is doubled?
Its acceleration will be
doubled
What happens to an object if its mass is doubled?
Its acceleration will be
halved
What the equation for Newton's second Law?
Force =
mass
x
acceleration
Mass is a measure of what?
Inertia
To accelerate from a main road to a motorway, what is the typical acceleration involved?
2
m/s ² (For a typical family car, that would require a force of
2000
N)
What is the inertial mass of an object?
A measure of how hard it is to change the
velocity
of an object
An object with a larger inertial mass will require a
larger
force to change the
velocity
What is the ration that inertial mass is given by?
Force
over
acceleration
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