1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MrMuchimi
3 years ago
15

Part 2: Finding Speed and Height Using Energy Directions: Use the KE and GPE equations to solve for speed or height depending on

the situation. 1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed? 2. A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at?
Chemistry
2 answers:
pashok25 [27]3 years ago
5 0

1. A 1,000-kg car has 50,000 joules of kinetic energy. What is its speed?
KE = [1/2]m(v^2) => v = √[2KE/m] = √[2*50,000joules/1000kg] = 10m/s
2. A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at? 
GPE = mgh => h = GPE / (mg) = 39,200 joules / (200kg * 9.8m/s^2) = 20m

3. A 1-kg model airplane has 12.5 joules of kinetic energy and 98 joules of gravitational potential energy. What is its speed? What is its height?
KE = [1/2]m(v^2) => v = √ [ 2KE/m] = √[2*12.5 j / 1kg] = 5 m/s
GPE = mgh => h = GPE/(mg) = 98/(1kg*9.8m/s^2) = 10 m
Soloha48 [4]3 years ago
3 0
KE = [1/2]m(v^2) => v = √[2KE/m] = √[2*50,000joules/1000kg] = 10m/s2. A 200-kg boulder has 39,200 joules of gravitational potential energy. What height is it at? GPE = mgh => h = GPE / (mg) = 39,200 joules / (200kg * 9.8m/s^2) = 20m
You might be interested in
Temperature is a measure of how much heat you have in, or around you. is it true or false
allochka39001 [22]

Your answer is

true

hope it helps you

7 0
2 years ago
On may 10th it's gonna be my birthday and my mum don't know what to get me what do u think i would like my bio: creative,artisti
pickupchik [31]

Answer:

It’s past your b day... sorry

Explanation:

8 0
2 years ago
Which of the following happens during a chemical reaction?
Lana71 [14]
C. atoms of reactants rearrange to form new substances
5 0
3 years ago
Read 2 more answers
Which process in the light-dependent reactions results in the release of hydrogen ions, electrons, and oxygen?
tino4ka555 [31]
The answer is actually Water Splitting! Hope this works:D
6 0
3 years ago
Read 2 more answers
How many molecules are there in 5H20?<br> A.5<br> B.7<br> C.10<br> D.11
Ad libitum [116K]

Answer:

the answers B which is 7

5 0
2 years ago
Other questions:
  • An electron is on a -2.5 eV energy level. the electron is stuck by a 2.5 eV photon. What will most likely happen?
    12·1 answer
  • The attraction between positive ions and surrounding mobile electrons forms which type of bond?
    14·1 answer
  • Which statement about surfactant molecules is correct?
    15·1 answer
  • A measurement of the amount of solute that is dissolved in a given quantity of solvent; usually expressed as mol/L.
    13·1 answer
  • How do you draw a bohr diagram for a boron ion?
    7·2 answers
  • If you help me, you are the best​
    15·1 answer
  • Balance the equations
    12·2 answers
  • Examples of nuclear fusion and fission.
    15·2 answers
  • What was the name of JJ. Thomson's experiment?
    6·2 answers
  • An ideal gas occupies 400ml at 270 mm Hg and 65°C. If the pressure is changed to 1.4 atm and the
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!