CP2-Forces And Motion
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What is a scalar quantity?
It has a magnitude but no direction
What is a vector quantity?
It has a magnitude and direction
Is displacement a scalar or vector?
Vector
Is distance a scalar or vector?
Scalar
Is velocity a scalar or vector?
Vector
Is speed a scalar or vector?
Scalar
Is acceleration a scalar or vector?
Vector
Is force a scalar or vector?
Vector
Is weight a scalar or vector?
Vector
Is mass a scalar or vector?
Scalar
Is momentum a scalar or vector?
Vector
Is energy a scalar or vector?
Scalar
What is velocity?
Speed in a stated direction
What is the equation for distance?
Speedxtime
What is the equation for acceleration?
Change in velocity/total time taken
What is Newton’s first law?
A body will remain at rest or continue in a straight line at a constant speed as long as the forces acting on it are balanced
What is Newton’s second law?
When a resultant force acts on a mass then there will be a change in its velocity. The resultant force determines the size and direction of the subsequent acceleration of the mass
What is weight?
The force a body experiences due to its mass and size of the gravitational field it is in (Earth in 10N/Kg)
How is weight measured?
Weight is a vector and is measured in Newton’s using a Newton meter
What is the equation for weight?
Mass x gravitational field strength
What is mass?
A measure of the amount of matter that is contained within a 3D space. It is not affected by the size of the gravitational field strength it is in
How is mass measured?
Mass is a scalar and is measured in Kg
What is Newton’s 3rd law?
For every action is an equal and opposite reaction
What is circular motion?
A body will move in a circular path if it’s motion is at right angles to a force that acts inwards along the radius of the path