Three balls of equal mass are fired simultaneously with equal speeds from the same height h above the ground. Ball 1 is fired straight up, ball 2 is fired straight down, and ball 3 is fired horizontally.
1)Rank in order from largest to smallest the speeds of the balls, v1, v2, and v3, just before each ball hits the ground.
a. v1 > v2 > v3
b. v3 > v2 > v1
c. v2 > v3 > v1
d. v1 = v2 = v3