Forces are responsible for all the interactions between particles and objects. They can be divided into two categories: contact forces and non-contact forces.
What are contact forces?
Forces between similar objects
Forces between touching objects
Forces between objects that do not touch
What is a non-contact force?
Forces between objects that are different to each other
What is the unit of force?
Which of these is a contact force?
How is the object shown in a free body diagram?
As a drawing of the object
As a written description of the object
As a box or a dot
What must an object have in order to be affected by gravity?
Which of these words describes the force between the north pole of a magnet and the south pole of another magnet?
What is a vector quantity?
A quantity that only has magnitude
A quantity that only has direction
A quantity that has both magnitude and direction
Two 30 N forces act on an object in opposite directions. Which statement is correct? - Higher
The resultant force is: 30 + 30 = 60 N
The resultant force is: 30 – 30 = 0 N
The resultant force is: 2 × 30 = 60 N
A single force can be broken into two forces acting a right angles to each other. What are these two forces called? - Higher