Newtons Laws And Momentum And Moments

Question 1

What is newtons 1st law.

Answer 1

An object that has balanced forces acting on it remains at rest or in motion.

Question 2

What is newtons 2nd law

Answer 2

The acceleration of an object is dependent on the magnitude of the force acting on it and the mass. F=Ma

Question 3

What is newtons 3rd law

Answer 3

When two objects interact they produces an equal and opposite reaction.

Question 4

What is the equation for momentum

Answer 4

Momentum = mass x velocity

P=mv

Question 5

What is the principle of conservation of momentum

Answer 5

The total momentum before an event is the same as after the event as long as no external forces act.

Question 6

What is an impulse?

Answer 6

Change in moment

Question 7

What is the equation for change in momentum

Answer 7

F= change in momentum / change in time

Question 8

What is the resultant force in terms of momentum

Answer 8

Rate of change of momentum

Question 9

What is the principle of moments

Answer 9

If an object is in equilibrium (forces are balanced) then total anti-clockwise moments = total clockwise moments.

Question 10

What must be met for an object to be in equilibrium

Answer 10

An object must have no resultant force and no resultant moment acting upon it