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
garik1379 [7]
3 years ago
8

The kinetic energy k of an object in joules is given by the formula k=1/2mv² where m is the object's mass in kilograms and v is

its velocity in meters per second. An object’s velocity is 20 meters per second, and its kinetic energy is 48,000 joules. If it speeds up to 40 meters per second, what is its new kinetic energy?
Mathematics
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

192000 J

Step-by-step explanation:

k = 1/2 mv²

48000 = 1/2 x m x (20)²

48000 = 200m

m = 240 kg

new k

k = 1/2 x 240 x 40²

k = 192000 J

You might be interested in
What steps should be taken to calculate the volume of the right triangular prism? Select three options.
Sonbull [250]
First option, third option, & fourth option i’m pretty sure
3 0
3 years ago
Solve the right triangle : A=22°, c=8
coldgirl [10]

hope it helps you!!!!!!!!!!!!

8 0
3 years ago
if a guy has $145 .00 in his hand, and he wants to give some to 2 friends how much is left in his hand
Mariulka [41]
$145.00/2=
$72.5
I hopes this helped
7 0
3 years ago
Read 2 more answers
A university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors. The professor is planning
azamat

Answer:

6.9%.

Step-by-step explanation:

Given that a university class has 26 students: 12 are art majors, 9 are history majors, 5 and are nursing majors, and the professor is planning to select two of the students for a demonstration, where the first student will be selected at random, and then the second student will be selected at random from the remaining students, to determine what is the probability that the first student selected is a history major and the second student is a nursing major the following calculations must be performed:

26 = 100

9 = X

9 x 100/26 = X

900/26 = X

34.61 = X

25 = 100

5 = X

500/25 = X

20 = X

0.2 x 0.3461 = X

0.069 = X

Thus, the probability that the first student selected is a history major and the second student is a nursing major is 6.9%.

8 0
3 years ago
Read 2 more answers
The Arno family is planning a 14 day April vacation. The location they've chosen has an average of 10 rainy days every April. Th
True [87]
Yes because only 1/3 of the days are rainy days, which is about 4.67 days of rain. 
6 0
3 years ago
Other questions:
  • A service station has a pump that distributes diesel fuel to automobiles. The station owner estimates that only about 3.2 cars u
    6·1 answer
  • Solve for c in the literal equation 9p + 7c = p. Represent any fractions in reduced proper or improper form only.
    7·1 answer
  • Cedric bought his truck new for $20,000. It’s value decreases 15.4% each year. In approximately how many years will the value of
    11·1 answer
  • If x^(3/5) = 1.84, then x^2 = ?<br> Show Work.<br> A.) 7.63<br> B.) 10.40<br> C.) 21.15
    8·1 answer
  • A linear equation determines a line in the xy-plane.<br><br> A. True<br> B. False
    12·2 answers
  • cleo can paint a room in 8 hours. while phil can paint the same room in 6 hours. if they paint the room together. how long will
    6·1 answer
  • Carlos got 130 pieces of candy on Halloween and 39 of them were lollipops what percent of the pieces of candy were lollipops
    10·1 answer
  • Help me out, math is irritating
    6·1 answer
  • Round the fraction to the nearest whole number.<br><br> 2<br> 9
    12·2 answers
  • Share $150 among John, Mary, and Sarah so that each of the two girls receives twice as much as John. Calculate the amount of mon
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!