To test the quality of a tennis ball, you drop it onto the floor from a height of 4.23 m. it rebounds to a height of 2.54 m. if the ball is in contact with the floor for 12.2 ms, what is its average acceleration during that contact?

Step-by-step explanation:

The average acceleration is given by:

where is the velocity of the ball an instant before hitting the ground and an instant after.

we can obtain by applying the following formula:

where since the ball falls from rest, g is the acceleration of gravity and

then:

(note that here we select the negative result because of the downwards direction of the velocity)

Similarly, we calculate with the formula:

where is the velocity at the maximum height, and

then:

Finally the average acceleration is:

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?