Salt is a substance because a substance is a material that has constant composition regardless of its source. Salt is the only option that matches this description
His. Curbs I b h bs. H b u b
Hi there!
The answer would be B. the slope of the plane.
Changing the slope of the plane would show how fast the ball went when Galileo changed the steepness of the slope. If he didn’t change the slopes steepness he would have the same results each time.
Hope this helps !
