Physics for IGCSE & O level - Forces And Motion (Section 7 - No. 37)
Which of the following are examples of forces in balance?
A book resting on a table.
A car accelerating from rest.
A person standing still.
A skydiver falling at terminal velocity.
Wyjaśnienie
In balanced forces, the net force is zero; this occurs for items at rest, constant velocity, or terminal velocity.