Question

A ball is thrown upward from the ground with initial speed of u. The ball is at a height of 80m at two times the time interval being 6 second. Find u in m/s

Answer 1

Explanation:

if u = constant

v=u

then

u = distance ÷time ( h= distance)

u= h÷t

u = 80÷6

= 13.33333