Question

a body is thrown upwards vertically with a velocity 'u' ,the greatest height to which it will rise is: option a) u÷g b)2u÷2g c)2u÷g

Answer 1

hey
answer is c. 2u÷g

Answer 2

b) Given, initial velocity = u, height = h and a = g (acceleration due to gravity)
At the highest point, final velocity becomes zero i.e., v = 0
From, third equation of motion,

v2=u2-2gh

0=u2-2gh

2gh=u2

h=u2divided by 2g