ASAP 100 POINTS
Plan a controlled experiment to investigate how an object’s position is related to the amount of its potential energy by measuring how high the ball bounces. Choose at least four heights from which you will drop the ball. The drop heights may be increased or decreased based on the bounciness of ball. Describe your experiment.

Answer:

Step-by-step explanation:

The height to which a ball will bounce depends on the height from which it is dropped, what the ball is made out of (and if it is inflated, what the pressure is), and what the surface it bounces from is made out of. The radius of the ball doesn't really matter, if you are measuring the height of the ball from the bottom of the ball to the ground.

A ball's gravitational potential energy is proportional to its height. At the bottom, just before the bounce, this energy is now all in the form of kinetic energy. After the bounce, the ball and the ground or floor have absorbed some of that energy and have become warmer and have made a noise. This energy lost in the bounce is a more or less constant fraction of the energy of the ball before the bounce. As the ball goes back up, kinetic energy (now a bit less) gets traded back for gravitational potential energy, and it will rise back to a height that is the original height times (1-fraction of energy lost). We'll call this number f. For a superball, f may be around 90% (0.9) or perhaps even bigger. For a steel ball on a thick steel plate, f is >0.95. For a properly inflated basketball, f is about 0.75. For a squash ball, f might be less than 0.5 or 0.25 - squash balls are not very bouncy. The steel ball on an unvarnished pine wood floor may not bounce at all, but rather make a dent, and so what the floor is made out of makes quite a lot of difference.

The expression (x14)(x−2)3 is equivalent to xn .

What is the value of n?

Enter your answer in the box.

n =

What is the approximate distance between the points (–5, 4) and (2, –8)?
A. 12.0 units
B. 19.0 units
C. 9.7 units
D. 13.9 units

What number makes the equation true? Enter the answer in the box.
divide by 5 = 9

Please help my teacher didn’t teach us this

Please help nagito ✨✨✨✨✨✨✨

Solve for x: 4.8x = 16.8
please give step by step explanation

Cal buys 250 pencils for $47.50. Hal buys 350 pencils for $59.50. Who gets a better deal on pencils? How do you know?

CAN SOME1 ANSWER THIS BECAUSE CLEARLY MY 16 YEAR OLD SISTER CAN'T ANSWER THIS. IF UR CORRECT I WILL GIVE BRAINLIEST. I'M JUST TRYING YO GET MY GRADE FROM A C- TO A B- OR ABOVE. PLS HELP ME.

pls pls pls pls pls helpppp meee

please help this is easy!!!!
It rained 15 inches in March. In May, it rained 6.108 inches less than in March. How much did it rain in May?

The table shows conversions of common units of length.

Unit of Length
Customary System Units
Metric System Units
1 inch
2.54 centimeters
1 foot
0.3048 meters
1 mile
1.61 kilometers

About how many inches are equivalent to 3 meters? Round the number(s) needed in the table to the nearest tenth to find the approximate answer.
10 inches
75 inches
100 inches
120 inches

Explain how to solve the equation and then check the solution.
9 = q – 4
Sample Response: Use the inverse operation to isolate the variable. Undo the subtraction of 4 by adding 4 to both sides of the equation. –4 + 4 = 0, and 9 + 4 is 13. The solution is q = 13. Check the solution by substituting 13 for q in the original equation, and then simplify. 13 – 4 is 9 and 9 = 9 is a true statement, so 13 is the solution.

Four people when to the concert and two of them purchased a t-shirt. Which expression could you use to determine the total amount spent if a concert ticket is $30 and a t-shirt is $20. *
4(30 + 20)
4(30) + 4(20)
4(30) + 2(20)
6(50)

Kai, a seventh grader, wants to determine the average number of times the families in his neighborhood visit the pool during the summer. He samples the families of four of his classmates. Which improvements could Kai make to his sample to increase the validity of the results? Select three choices.
sample more families
sample families that have children who are not in seventh grade
sample families that regularly use the pool
sample families whose answer to the survey question is predetermined
sample families living in every third house in the neighborhood
ANSWER BELOW HERE
B - sample families that have children who are not in seventh grade
D -sample families whose answer to the survey question is predetermined
E - sample families living in every third house in the neighborhood

A sandwich store charges a $10 delivery fee, and $4.50 for each sandwich. What is the total cost for x sandwiches? *

Sal purchases a new gaming system and games for $530. The tax is 7%. How much would he spend in taxes only ?

A) $37.10
B) $75.05
C) $567.10
D) $371.00

Becky buys a shirt for $25, a pair of pants for $32, and a new pair of shoes for $48. She has a 20% coupon off her total. How much is the discount?

A) $2.10
B) $21.00
C) $105.00
D) $126.10

Use the fraction models to solve the subtraction equation.

Five fraction models, the first four are completely shaded, and the last one is partitioned into six equal parts with four parts shaded. Below is the equation four and four sixths minus one and one third equals blank line.

three and two sixths
three and three sixths
three and three thirds
five and five ninths

plz answer im giving out brainliest!! ;)

A runner is participating in a Boston marathon. He has run 12 miles out of a 26.2-mile section. What percent of the course has he run so far?

George wants to run 7 1/2 miles. The distance around a park is 1 1/5 miles. How many times must George run around the park to run the 7 1/2 miles?

Explain what the inequality −4h≤−14 represents.

i don't know what to put in the blacks please help me.

Can some one help me with this please. I will give you anything if you get this right.

Danielle wants to treat her friends to a night at the movies . The movie tickets cost $9.50 and she wants to spend $20 on popcorn and candy.

If she has $130 dollars to spend, how many friends can she invite?

g − 334 = –234

solve for g

please help 1. x= 26 1/4 (If you divide 105 by 4 you get the answer)

2. w=1.92 (subtract 3.08 from 5 and you get that)

3. x=16 (16/8 simplifies into 2)

4. u=16 (2 times 16 is 32 and if you add 32 plus 32 you get 64)

5. Yes (subtract 9.3 from 11.8)

6. Yes (divide 120 by 4)

Step-by-step explanation:

Gerry has $1200 in his savings account. How many years must he leave it in the account if he wants to earn $600 in interest and the interest rate is 5%? PLEASE SHOW WORK! :)

Look at the 2 math pictures

There are 4 jacks in a standard deck of 52 playing cards. If Patricia selects a card at random, what is the probability that it will be a jack?
A. 1/52
B. 1/13
C. 1/2
D. 12/13

Simplify by combining like terms 5/6a+4 1/4a

Sam had $39 to buy Christmas presents for his family. He bought a $12 T-shirt for his sister , an $18 dollar bracelet for his mom, and he still needs to get his dad a CD.

What's the most amount of money he can spend on his Dad's present?