Answer :
Alice and bill throw the ball with same speed [tex]V_{A}[/tex]=[tex]V_{B}[/tex].
What is the speed ?
The speed at which an object's location changes in any direction. The distance traveled in relation to the time it took to travel that distance is how speed is defined. Given that it just has a direction and no magnitude, speed is a scalar number.
Okay, so let's imagine that there are two persons, Bob and Alice, standing on the edge of a cliff. We want to know how the speeds compare when the balls strike the ground so that as throws her ball downward at a speed of v and bill throws his ball upward at a speed of v from the same height.
Bill's will therefore rise to this height, strike 0 at that point, and then descend again. When it reaches this height, it will really be moving at the same speed as when it left Bill's hand, just in the opposite direction.
As a result, it will appear as though you tossed it straight down at the same speed, which implies When they both strike the ground, Alice's and Bill's balls will do so at the same pace.
The trajectory of Bill's ball will be symmetrical about this point in terms of the velocity or have the same speed going up as it did coming down or coming down as it did up, if you look at it because there is essentially no air resistance or anything.
To know more about speed visit:
https://brainly.com/question/28224010
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The complete question is:
"Alice and Bill are at the top of a cliff of height H. Both throw a ball with initial speed v0, Alice straight down and Bill straight up. The speeds of the balls when they hit the ground are [tex]V_{A}[/tex] and [tex]V_{B}[/tex]. If there is no air resistance, which is true? A)[tex]V_{A}[/tex] <[tex]V_{B}[/tex] B) [tex]V_{A}[/tex]=[tex]V_{B}[/tex] C) [tex]V_{A}[/tex]>[tex]V_{B}[/tex] D) impossible to tell"
