Question

An object is shot upwards, from the ground, with an initial velocity of 100m/s. How high will it be after 2.0s?

Answer 1

Answer:

180 m

Explanation:

u = 100m/s, a = g = -10 m/s^2 (it's retardation)

t = 2 s

height (h) = ut + 1/2at^2

= 100*2 - 1/2*10*2*2 = 200 - 20 = 180 m