Further Motion and Mechanics

Question 1

What is the law of conservation of momentum?

Answer 1

The sum momentum of a system before an interaction is equal to the momentum after an interaction providing NO EXTERNAL FORCES ACT.

Question 2

What is the principle of moments?

Answer 2

For a body in equilibrium, the sum of the clockwise moments is equal to the sum of the anticlockwise moments about the same point

Question 3

What is the equation for momentum?

Answer 3

P (Italics) = mv

Momentum (kg m/s) = Mass (kg) x Velocity (m/s)

Question 4

What is the equation for moments?

Answer 4

M=Fd

Moment (N m) = Force (N) x distance from point of rotation (m)

Question 5

What does it mean when a collation is elastic?

Answer 5

That all kinetic energy was converted to kinetic energy

KE₁ = KE₂