An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? Formula=1/2mv^2 a(7.5 b(15 kg c(60 kg d(120 kgnevermind i found the answer its (15 kg) because to solve for m its m= K2/v squared

Answers

Answer 1

Answer: The Kinetic Energy (K.E) of an object can be calculated as:

$K.E= (1)/(2)mv^(2)$

We are given:
K.E = 480 K
Velocity of the object = v = 8 m/s

Using the values, we get:

$480= (1)/(2)m(8)^(2) \n \n 480= (1)/(2)*64m \n \n 480=32m \n \n m=15$

Thus, the mass of the object will be 15 kg.

So the correct answer is option b

Answer 2

Answer:

Hello!

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object ?

We have the following data:

KE (Kinetic Energy) = 480 J

m (mass) = ? (in Kg)

v (speed) = 8 m/s

Formula to calculate kinetic energy:

$\boxed{KE = (1)/(2)*m*v^2}$

Solving:

$KE = (1)/(2)*m*v^2$

$480 = (1)/(2)*m*8^2$

$480 = (1)/(2)*m*64$

$480*2 = 64*m$

$960 = 64\:m$

$64\:m = 960$

$m = (960)/(64)$

$\boxed{\boxed{m = 15\:Kg}}\end{array}}\qquad\checkmark$

Answer:

b) 15 kg

_______________________________

I Hope this helps, greetings ... Dexteright02! =)

Related Questions

Please help i don’t understand stand.
I an confused on how to get to 6 cups
allison has 3 containers with 25 crayons in each. she also has 4 boxes of markers with 12 markers in each box. She gives 10 crayons to a friend. how many markers dose alison have know
three snack bars contain 1/5,0.22,and 19% of their calories from fat. which snack bar contains the least amount of calories from fat ?
the price of a tent was decreased by 15% and sold for 76.49. What was the original price of the tent in dolars?

Help please with this, ASAP!

Answers

Answer:

$a_(n)=12n-8$

Step-by-step explanation:

We have been given a recurrence relation $a_(n+1)=a_(n)+12$ and the first term of the sequence $a_(1)=4$ .

We can rewrite the given recurrence relation as: $a_(n+1)-a_(n)=12$

We know that if difference between two consecutive terms is always constant, the sequence is called an arithmetic sequence. So we are dealing with an arithmetic sequence with first term as 4 and common difference as 12.

We can therefore, write an explicit formula for nth terms of the sequence as.

$a_(n)=a_(1)+(n-1)d\na_(n)=4+(n-1)(12)\na_(n)=4+12n-12\na_(n)=12n-8\n$

This is the required explicit function rule for the given sequence.

Estimate. Then find the difference.

324-285=

Answers

Answer:

Step-by-step explanation:

324-285

WE can estimate the numbers to nearest tens or nearest hundreds

LEts estimate the numbers to nearest tens and find the difference

324 round to nearest tens is 320

285 have 5 in once place that is equal to 5 so we add 1 with 8

285 round to nearest tens is 290

Now we find the difference

$320- 290= 30$

The difference is 30

If we estimate to nearest hundred then 300 -300 becomes 0

If rounding to the hundreds
To estimate round 324 and 285 to the closest hundred.
300 - 300
Then subtract 300 - 300 =
0
If rounding to the tens
To estimate round 324 and 285 to the nearest ten.
320 - 290
Then subtract 320 - 290 =
30

98.6 as a mixed number in simplest form