Reaction force / Upthrust

Question 1

What is the reaction force?

Answer 1

The force that acts upwards on a body resting on a surface

Question 2

What direction does the reaction force act in?

Answer 2

A direction perpendicular to the surface on which the object is resting

Question 3

When does reaction force happen?

Answer 3

When a body is supported on a solid surface

Question 4

Where a body is in a liquid or a gas the upwards force may be….

Answer 4

Upthrust or a more specific term such as A.R