An orange is dropped from a height of 100m above the ground level. Calculate the velocity o f the orange just before it strikes the ground.

Physics Jamb, Waec, Neco Past Questions & Answers on Speed, Velocity and Acceleration

QUESTIONS 27. An orange is dropped from a height of 100m above the ground level. Calculate the velocity o f the orange just before it strikes the ground. 

WAEC 2005 Ans 44.7m/s

SOLUTIONS 

v² = u² + 2gh

Initial velocity u, = 0m/s

Final velocity v = ?

Acceleration due to gravity g, = 10m/s²

Height h, = 100m

Using v² = u² + 2gh

v² = 0² + 2(10)(100)

v² = 0 + 2000

v² = 2000

v = √2000

v = 44.72m/s