An orange is dropped from a building. One second after dropping the orange, it falls one storey. Two seconds after the orange is dropped, how many stories has it fallen?

D. 4 Stories.

Height of one storey, i.e. after dropping the orange,  h = ut + 1/2 at² = 1/2 (10) (1² )= 5 m

Displacement of orange after 2 sec, 1/2 (10)(2²) = 20 m.

Number of storey = 20 m / 5 m = 4

Regards,

Team,

TopperLearning.