Chapter 3 - Forces

Question 1

What are the things that need to take note of when drawing vector diagram?

Answer 1

Double Arrow for resultant force
Single Arrow for balanced diagram
SCALES
ANGLES
DIRECTION OF THE FORCE

Question 2

What are the five forces acting on a moving car?

Answer 2

Force of the engine (Driving Force)
Normal Reaction Force 
Weight
Frictional Force
Air resistance

Question 3

What are the forces that is acting on a stationary car

Answer 3

Normal Reaction Force

Weight

Question 4

Newton’s First Law of Motion

What happen to the object I f there is no resultant force acting on it

Answer 4

Object will continue its state of rest or uniform motion in a straight line

Question 5

What happen to the acceleration when the resultant force is zero?

Answer 5

There is no acceleration

Question 6

Newton’s Second Law of Motion

When there is a resultant force acting on an object of a constant mass, what happen to the object?

Answer 6

The object will accelerate in the direction of the resultant force

Question 7

Newton’s Third Law of Motion

For every action, ?

Answer 7

There will be an equal and opposite reaction

Question 8

Force =

Answer 8

Mass x Acceleration

Question 9

Three characteristics of Action and Reaction

Answer 9

They are equal in magnitude
They act on opposite direction
They act on different bodies