What is the definition of velocity? (AKS 1/DOK1) • A. a measure of how fast something is moving in one
O B. always calculated as a unit of displacement divided
O C. all answers are correct
O D. the displacement covered per unit time

c. all answers are correct

Explanation:

Im taking the test now

18.81m/s^2

Explanation:

Given the following :

Height of building = 0. 1 km = 100m

Horizontal distance = 85m

Using the equation :

S = 1/2gt^2

And S = 100, g = 9.8m/s^2

100 = 0.5(9.8)(t^2)

100 = 4.9(t^2)

t^2 = (100 / 4.9)

t^2 = 20.408

t = 4.5175214

t = 4.52s

Therefore, initial velocity of ball in horizontal direction;

Using the equation:

S = ut + 0.5at^2

a in horizontal direction = 0

Therefore,

S = ut

85 = u × 4.52

u = (85 / 4.52)

u = 18.805

u = 18.81m/s