Newtons Laws

Question 1

Acceleration

Answer 1

The rate of change of velocity

Question 2

Free-body diagrams

Answer 2

A diagram that shows the relative magnitudes and directions acting on a particle that has been isolated from its surroundings

Question 3

Kinetic frictional force

Answer 3

A force acting parallel to a surface and opposes the direction of motion of a moving object relative to the surface

Question 4

Mass

Answer 4

The amount of matter in an body ( measured in kg )

Question 5

Maximum static frictional force

Answer 5

The static frictional force is a maximum just before an object starts to move across a surface

Question 6

Newtons first law of motion

Answer 6

A body will remain in a state of rest or motion at constant velocity unless a non-zero net force acts on it

Question 7

Inertia

Answer 7

The resistance of a body to a change in its state of rest or uniform motion in a straight line. Mass is a measure of an objects inertia

Question 8

Newtons second law of motion

Answer 8

When a net force acts on an object , the object will accelerate in the direction of the force at an acceleration directly proportional to the force and inversely proportional to the mass of the object

Question 9

Newtons third law

Answer 9

When object A exerts a force on object B , object B simultaneously exerts a force equal in magnitude but opposite in direction on object A

Question 10

Newtons Law of Universal gravitation

Answer 10

Each body in the universe attracts every other body with a force that is directly proportional to the product of their masses amd inversely proportional to the square of the distance between their centre’s

Question 11

Normal force

Answer 11

The force or the component of a force which a surface exerts on an object with which it is in contact, and which is perpendicular to the surface.