If a ball is thrown off a 123m cliff at a speed of 18m/s ,how far from the base of the cliff is the ball ? show steps ill give brainliest

consider the motion of the ball along the vertical direction

v₀ = initial velocity in vertical direction = 0 m/s      (since the ball was thrown horizontally)

a = acceleration = acceleration due to gravity = 9.8 m/s²

Y = vertical displacement = height of the cliff = 123 m

t = time of travel

Using the kinematics equation

Y = v₀ t + (0.5) a t²

inserting the values

135 = (0) t + (0.5) (9.8)  t²

t = 5.25 sec

consider the motion of the ball along the horizontal direction

v'₀ = initial velocity in horizontal direction = 18 m/s    

a' = acceleration = 0 m/s²

X = horizontal displacement = ?

t = time of travel = 5.25 sec

Using the kinematics equation

X = v'₀ t + (0.5) a' t²

inserting the values

X = (18) (5.25) + (0.5) (0)  t²

X = 94.5 m

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.