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?
Which of these involves a contact force?
A planet in orbit around a star
A skydiver falling through the air
Electrons attracted to the nucleus of an atom
Which of these is a non-contact force?
Which of these words describes the force between the north pole of a magnet and the south pole of another magnet?
Which of these words describes the force between two negatively charged particles?
What must an object have in order to be affected by electrostatic forces?
What must an object have in order to be affected by gravity?