Physics for IGCSE & O level - Forces And Motion (Section 5 - No. 3)
What happens to the speed of a ball after it is thrown horizontally?
Increases continuously
Decreases continuously
Remains constant (ignoring air resistance)
Increases initially, then decreases
คำอธิบาย
Horizontally thrown, neglecting air resistance, its horizontal speed is constant, affected by gravity vertically.