Question

a stone is projected vertically upward with a velocity of 19.6m/s .if the acceleration due to gravity is 9.8m/s2.find when and how often the body will be at a height of 14.7meters

Answer 1

velocity of stone 19.6m/s

ACC. due to gravity 9.8m/s

then actual velocity upward is

91.6-9.8=9.8m/s

for a height of 14.7m

14.7/9.8=1.5second