Question

I can't chose between A or D can someone help me out?

You want to determine your speed running across the room. What is one piece of data you need?

A) The distance you run
B) When you start your stopwatch
C) How big each step is
D) How fast you are moving
I know its not C)

Answer 1

D) How fast you are moving.

Answer 2

D) How fast you are moving

Explanation:

Well, if you're talking about speed, then we don't want distance yet, do we? If you were talking about how far someone ran, then distance would be a piece of data. But speed is "how fast", so something tells me the answer is D.

Bye! Hope this helped. :)