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
anyanavicka [17]
3 years ago
8

Determine the kinetic energy of a 100-kg roller coaster car that is moving with a speed of 20.0/ms.

Mathematics
1 answer:
rjkz [21]3 years ago
3 0

Answer:

The kinetic energy is 20,000\ J

Step-by-step explanation:

The kinetic energy of a body is defined as:

k = \frac{1}{2}ms ^ 2

Where <em>m</em> is the mass of the roller coaster car

<em>s</em> is the speed and <em>k</em> is the kinetic energy

We know that s = 20\ m/s

m = 100\ kg

Then the kinetic energy of the roller coaster car is:

k = \frac{1}{2}(100)(20) ^ 2\\\\k = 50(20) ^ 2\\\\k = 50 * 400\\\\k = 20,000\ J

You might be interested in
Pls help I'll give brainliest !!​
posledela

Answer:

38 in

Step-by-step explanation:

P=w+w+h+h=18+18+6+6=26+12=38 in

4 0
3 years ago
Read 2 more answers
Sam and bethan share £54 in the ration 5:4
Margarita [4]

Answer:

<h2>Let the common ratio b x thus the part becomes</h2><h2>=5x and 4x respectively</h2>

<h2>Thus,ATQ</h2>

<h2>5x+4x= 54</h2>

<h2>9x=54</h2>

<h2>x= 6</h2>

<h2>Sam will get is £30 (putting the value of x)</h2><h2>and Bethan will get £24</h2>
3 0
3 years ago
Camison's minnan gets 14 miles per gallon for city driving and 19 miles per gan
loris [4]

Answer:

<u>7 gallons were used for city driving and 17 gallons were used for highway driving</u>

Correct statement and question:

camison's minnan gets 14 miles per gallon for city driving and 19 miles per gallon for highway driving. At the beginning of the week, the 24-gallon tank was full. The family traveled 421 miles before running out of gas. How many gallons were used for city driving and  how many were used for highway driving?

Source:

Previous question found at brainly

Step-by-step explanation:

x = Gallons for city driving

24 - x = Gallons for highway driving

Miles drove before running out of gas = 421

Now let's solve for x, writing the following equation:

14x + 19 (24 - x) = 421

14x + 456 - 19x = 421

-5x = 421 - 456

-5x = - 35

x = -35/-5

x = 7 ⇒ 24 -x = 17

<u>7 gallons were used for city driving and 17 gallons were used for highway driving</u>

3 0
3 years ago
Which solution set describes the set of real numbers less than or equal to -1
Igoryamba
Easy just do the negitive numbers and then try to add to the greates number 
8 0
3 years ago
Divide. (4x^3+2x+1)÷(x+1)
stiks02 [169]

(4x^3+2x+1)\div(x+1)=4x^2-4x+6-\dfrac{5}{x+1}

8 0
3 years ago
Other questions:
  • Input- -3 output= 2 what is three possible rule for this table?
    8·1 answer
  • BRAINLIST AND 50 POINST ANSWER 5-8
    12·1 answer
  • Which function represents the inverse function of the function f(x)= x^2+5
    9·2 answers
  • Why is it valid to say that both a function and its inverse describe the same relationship
    5·1 answer
  • Which relation is a function?<br> Of<br> Mark this and return<br> Save and Exit<br> Next<br> Submit
    12·1 answer
  • What is the length of the diagonal?<br> 18 cm<br> 9 cm
    5·1 answer
  • How much money do you need to deposit monthly into a college fund for
    5·1 answer
  • the graph below shows a proportional relationship between x and y. what is the constant of proportionaliy y/x​
    11·2 answers
  • The governor of state A earns ​$48,980 more than the governor of state B. If the total of their salaries is ​$289,660​, find the
    5·2 answers
  • Write 215 as a product of its prime factor
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!