Physics for IGCSE & O level - Forces And Motion (Section 10 - No. 47)
Which of the following situations describe balanced forces?
A car moving at a constant speed on a straight road.
A falling object accelerating towards the earth.
A book resting on a table.
A rocket launching upwards.
ব্যাখ্যা
Constant speed means zero acceleration, and objects at rest indicate balanced forces.