An object of mass 100g is thrown vertically upward from a point 60cm upabove the earth's surface with an initial velocity of 150cm/sec

Answer 1

well, the height in meters is

h(t) = 0.60 + 0.15t - 4.9t^2

I presume you want to do something with its weight, which is 0.1*9.8 N

. . .