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FrozenT [24]
3 years ago
13

2. A motorcycle rider moving with initial velocity of 15.0 m/s uniformly accelerates to a speed of 30.0 m/s in a.

Mathematics
1 answer:
xenn [34]3 years ago
3 0

Given :

Initial velocity , u = 15 m/s .

Final velocity , v = 30 m/s .

Distance travelled , d = 40 m .

Also , this body is uniformly accelerating .

To Find :

(a) What is the acceleration .

(b) How long does this take .

Solution :

Let , acceleration be a .

By , equation of motion :

v^2-u^2=2ad\\\\a=\dfrac{v^2-u^2}{2d}\\\\a=\dfrac{30^2-15^2}{2\times 40}\\\\a=8.44\ m/s^2

Also , by equation :

v=u+at\\\\t=\dfrac{v-u}{a}\\\\t=\dfrac{30-15}{8.44}\ s\\\\t=1.78\ s

Hence , this is the required solution .

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How do you graph a line written in standard form
Sonbull [250]
Ok so standard form is a bit tricky, but I’ll help explain

Here’s and example:

If you have 2x+5y=10 here is how you would solve it

First you divide the x value by what the number is equal to (in our example, 10), and then we get 10/2 is 5. So now we know that

x is equal to five

Keep that in mind. Now we just have to do the same thing for the y value. 5/10 is 2, so you know that

y is equal to two

NOW you put those two together, and graph on the intercepts (the positions on the y and x axis where the lines intercept)

You would put a line on the x axis at 5, and on the y axis at 2

If you have any questions, you can ask
4 0
2 years ago
Please help me i need to finish this i’m tired (please use grid if you can) asap!!!
jasenka [17]

The linear equation is y = 4x - 4

And the graph of the linear equation can be seen in the image below.

<h3>How to graph the last line?</h3>

It seems that you already are good at graphing, so I will try to explain how to find the equation more in detail.

Remember that a general linear equation is written as:

y = a*x + b

Where a is the slope and b is the y-intercept.

In this case, we know that the y-intercept is -4, then b = -4, replacing that we get:

y = a*x - 4

Now we also can see that this line passes through the point (2, 4), this means that if we evaluate in x = 2, the outcome should be y = 4, replacing that we get:

4 = a*2  - 4

4 + 4 = a*2

8 = a*2

8/2 = a = 4

Then the slope is 4, and the linear equation is:

y = 4x - 4

The graph is below.

If you want to learn more about linear functions:

brainly.com/question/4025726

#SPJ1

8 0
1 year ago
An item originally costs $16.95 and is on sale for 22% off the original price. The sales tax is 6.5%. Find the cost of the item
olga_2 [115]

Answer:

$14.08

Step-by-step explanation:

$16.95 * 22% = $3.729

$16.95 - $3.729 = $13.221

^ to find the sale price of the item

$13.221 * 6.5% = $0.859

$13.221 + $0.859 = $14.08

^ to add on sales tax to the sale price

8 0
3 years ago
Need help again please
quester [9]

Answer:

F.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
B + 12 = 16; 2, 3, 4
Molodets [167]

Answer:

4

Step-by-step explanation:

b+12 =16

-12. -12

b = 4

hope this helps

5 0
3 years ago
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