Ask question

Ask question

All categories

3 years ago

12

A bicycle and a biker have a mass of 80 kg traveling at a velocity of 3 m/s. What will happen to the kinetic energy, if the bike

r increases the speed to 6 m/s.

1 answer:

-Dominant- [34]3 years ago

7 0

Answer:

The kinetic energy will increase.

Step-by-step explanation:

1/2*80*9=360J .After the acceleration, it will increase to 1/2*80*36=1440J

You might be interested in

WHAT IS INSIDE QRS <br> HELP ME NOW PLS

In-s [12.5K]

Answer:

(-3,3)

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

A carpenter needs to cut a 5 foot, 8 inch piece of wood from an 8-foot board to make a repair to a door. How many inches of wood

erastovalidia [21]

Answer:

Step-by-step explanation:

1 foot = 12 inches

length of board in inches = 8 ft × (12 in)/ft = 96 in

length of cut in inches = 5 ft + 8 in = 5 ft × (12 in)/ft + 8 in = 60 in + 8 in = 68 in.

96 - 68 = 28 inches left

3 0

3 years ago

Expand the following - (-3x + y + z) square

lbvjy [14]

Answer:

9x square + y squared + z squared

Step-by-step explanation:

Multiply all the numbers by '-'. Then square them all

3 0

3 years ago

4 - 5/2 * (1/10x) = 1 what is the value of x

Inga [223]

$4 - 5 / 2 * (1/10x) = 1\\$

The first step is to identify the order in which the equation must be solved, by following PEMDAS (you might know it as BEDMAS):

Parenthesis (or Brackets)

Exponents

Multiplication and Division

Addition and Subtraction

My advice would be to add parenthesis, following these rules, if you are not very good at finding them immediately by sight.

So:

$4 - 5 / 2 * (\frac{1}{10x}) = 1\\\\4 - [(5/2)*(\frac{1}{10x})]=1\\\\4-(2.5*\frac{1}{10x})=1\\\\4-\frac{2.5}{10x}-1=0\\3-\frac{x}{4}=0\\\frac{x}{4}=3\\x=3*4\\x=12$

We check our answer:

$x=12\\4 - [(5 / 2) * (1/10)*(x)] = 1\\4 - [(5 / 2) * (\frac{1}{10}) * (12))] = 1\\4 - [2.5 * (\frac{1}{10})*12] = 1\\4 - [(\frac{2.5}{10})*12] = 1\\4 - [(\frac{1}{4})*12] = 1\\4 - 3 = 1\\1=1$

We are right!

So, $x=12$ .

6 0

3 years ago

Select the equation of the line that passes through the .5,7 and is perpendicular to the line x equals 4

lions [1.4K]

Hello!

To be perpendicular to x = 4, the line must be y = something. This eliminates answer choices #2 and #4. Also, to pass through the point (.5, 7), the line must be y = 7.

So answer choice #3.

Hope this helps!! Let me know if you have ANY questions.

8 0

3 years ago