Mechanics

Question 1

What is Newtons First Law?

Answer 1

A body in motion uniform motion remains in uniform moiton and a body at rest remains at rest, unless acted upon by a nonzero net force

Question 2

What is Newtons Second Law?

Answer 2

The rate at which a body of momentum changes is equal to the net force acting on the body

Question 3

What is Newtons Third Law?

Answer 3

If object A exerts a force on object B, then object B exerts a an oppositely directed force of equal magnitude on A

Question 4

Define Inertia

Answer 4

Some form of resistance

Question 5

Define Inertial reference frame

Answer 5

A reference frame undergoing uniform motion

Question 6

Define Drag forces and its factors

Answer 6

The factors are:
- fluid density
- surface area
- speed

Question 7

Define Conservation force

Answer 7

When the total work done by a force acting as an object moves over any closed path is zero then then the force is conservative

Question 8

Define Nonconservative force

Answer 8

When the total work done by a force acting on an object does not equal zero

Question 9

Where is the energy stored and whats the system?

Answer 9

Potential energy of the system and kinetic energy on the system

Question 10

Define Conservation of Linear Momentum

Answer 10

When the net external force on a system is zero, the total momentum of the system - the vector sum of the individual momentum of its constitute remains constant

Question 11

K in regards to Elastic and Inelastic collision

Answer 11

K is conserved in elastic collision, but is not conservered in inelastic collision (as nonconservative forces take away mechanical energy)