Diagram shows a stroboscopic photograph of two steel balls A and B with masses 50 g and 100 g respectively in a state of free-fall. Both balls are dropped simultaneously from the same height.
Rajah menunjukkan suatu fotograf stroboskop bagi dua bola keluli A dan b berjisim 50 g dan 100 g masing-masing berada dalam keadaan jatuh bebas. Kedua-dua bola dilepaskan serentak dari ketinggian yang sama.
(i) What is meant by free-fall?
Apakah maksud jatuh bebas?
