Which data requires the least number of steps to find the average velocity of a ball pitched over home plate from the pitcher's mound?

Question

anonymous · Answer

A.
distance from pitcher's mound to home plate = 60 feet; average speed of baseball = 85 miles per hour
 
 B.
distance from pitcher's mound to home plate = 60 feet; time for baseball to go from pitcher's mound to home plate = 0.4 seconds
 
 C.
mass of baseball = 145 grams; force of throw = 14.2 N
 
 D.
average speed of baseball = 85 miles per hour; force of throw = 14.2 N

roadjester · Answer

Unless I'm missing something, I'd say B.

anonymous · Answer

I was guessing it was B too. Thank you.

roadjester · Answer

The word "average" velocity is making me doubtful though.
The definition of average is not the same as instantaneous.

anonymous · Answer

I didn't realize that...then I guess the answer is A then.