Answer:
B. 44.1
Explanation:
We can use the equation y=1/2gt^2 to find the distance in the vertical direction, where y= distance in the vertical direction, g=acceleration due to gravity, and t=time
we only know acceleration due to gravity(9.8m/s^2),
plug in known variables,
y=1/2*9.8*t^2
we still need to plug in the time variable.
In order to do that, we an use the s=d/t equation and re arrange that formula to get: t=d/s, where t=time, d=distance, and s=speed.
plug in known variables,
t=60/20
t=3
now that we know the time, we can plug that into our original equation
y=1/2*9.8*3^2
simplify,
y=4.9*3^2
y=4.9*9
y=44.1m
Thus, B is your answer
