A mango fruit drops from a branch 10m above the ground. Just before hitting the ground its velocity is

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

QUESTIONS 39. A mango fruit drops from a branch 10m above the ground. Just before hitting the ground its velocity is 

A. 10√2m/s

B. 10/√2m/s

C. 100m/s

D. 5√2m/s

E. 200m/s

JAMB 1982Ans: 10√2m/s

SOLUTIONS 

Height h=>10m

Acceleration due to gravity g = 10m/s²

Initial velocity u => 0

Final velocity v= ?

V² = u² + 2as

V² = 0² + 2(10)(10)

V² = 0 + 2(100)

v² = 0 + 200

V = √200

V = 10√

2m/s or 14.14m/s ANSWER