A projectile is fired from ground level over level ground with an initial velocity that has a
vertical component of 20 m/s and a horizontal component of 30 m/s. Using g = 10 m/s
2
, the
distance from launching to landing points is:
A. 40 m
B. 60 m
C. 80 m
D. 120 m
E. 180 m
