How would you describe the velocity of a ball at its different stages when it is thrown up into the air.?

Answer 1

During the ball's ascent, its VERTICAL velocity is positive and decreasing. It is decreasing at a constant rate of 32 feet per second (or 9.8 meters per second) each second.

At the top (apex) of its flight, the ball's vertical velocity is zero, but it is still decreasing (i.e., changing from positive to negative).

As it descends, the ball's vertical velocity is negative and becoming more negative (which is to say that the vertical velocity is decreasing) at a constant rate of 32 feet per second (or 9.8 meters per second) each second. (The absolute value of the velocity is increasing, but since a FALLING object's vertical velocity is NEGATIVE, and becoming MORE negative, we say it is decreasing.

If the velocity you're interested in includes a horizontal component, the horizontal component remains constant (ignoring wind resistance), so the ball's TOTAL velocity is the sum of a constant horizontal component, plus the vertical component that was described in the preceding paragraphs. The resulting path is a parabola, or "arc" (as you well know, from experience throwing a ball).

Answer 2

as the ball rises its velocity is slowing down because of the downward acceleration due to gravity.

at the top of its flight v=0 and it is not moving, HOWEVER it still has accelertation because gravity is still acting upon it.

once the ball falls back toward the earth its velocity begins to increase once more becuase gravity is accelerating it downward

key points to remember are:

- when velocity and acceleration are in opposite directions (when the ball is being thrown up but gravity is acting down on it) the object SLOWS DOWN

- when velocity and acceleration are in the same direction (the ball is falling down towards the ground and acceleration due to gravity is also downward) then the object SPEEDS UP.

the trajectory of the ball will be a parabola.

Answer 3

If I were you, I would draw myself a diagram. Then, draw out the PARABOLA of the ball (definition below). Then, I would label stages in my diagram, determine the velocity, and write that all down. Then, hand it in... Or whatever you're doing with it.

Parabola - Path the ball would take through the air on it's path of tragectory (spelling?)

Answer 4

Don't forget to mention that the ball's velocity is Zero when it's at it's highest point. Meaning that it is not moving.

Answer 5

It's initial velocity, it's intermediate velocities, it's terminal velocity (zero) when it reaches it's apex.

Answer 6

decreasing while it's going up, then increasing as it's coming back down.