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What two factors affect an objects momentum?
Mass and Velocity.
What is the law of conservation of momentum?
The total momentum before an interaction is equal to the total momentum after an interaction.
What is conserved during elastic collisions?
Kinetic energy.
What type of collision is it if kinetic energy is not conserved?
Inelastic collision.
Why is kinetic energy not conserved in a collision?
Some of the energy is transferred into other forms such as heat, sound or strain energy that deforms an object.
What are the 5 symbols used in the equations of motion?
x, u, a, v, a, t.
What is a moment?
A turning force.
What are the two quantities required to calculate a moment?
Force applied and the distance from the pivot.
What is the principle of moments?
The sum of the clockwise moments is equal to the sum of the anti-clockwise moments if the system is balanced.
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