Ask question

Ask question

All categories

2 years ago

7

A runner increases his velocity from 0 m/s to 20 m/s in 2.0 s. What was his average acceleration?

1 answer:

goblinko [34]2 years ago

7 0

Answer:

$a = \frac{dv}{dt } = \frac{20 - 0}{2} = 10$

You might be interested in

What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?

xxMikexx [17]

$a_1=-5;\ r=3;\ a_n=-405\\\\a_n=a_1r^{n-1}\\\\subtitute\\\\-5\cdot3^{n-1}=-405\ \ \ |divide\ both\ sides\ by\ (-5)\\\\3^{n-1}=81\\\\3^{n-1}=3^4\iff n-1=4\to n=5\\\\S_n=\dfrac{a_1(1-r^n)}{1-r}\\\\S_5=\dfrac{-5(1-3^5)}{1-3}=\dfrac{-5(1-243)}{-2}=\dfrac{5\cdot(-242)}{2}=5\cdot(-121)=-605\\\\\\Answer:\boxed{S_5=-605}$

4 0

3 years ago

Find x- and y-intercepts. Write ordered pairs representing the points where the line crosses the axes. Note x-intercept is a poi

GenaCL600 [577]

Your answer would be -2/3 and that is in slope y-intercept is (0,2)

5 0

3 years ago

Read 2 more answers

a school had 690 students sign up for the trivia teams if they wanted to have nine teams with the same number of students on eac

Anna11 [10]

Answer:

30 more students

Step-by-step explanation:

690 + 30 = 720

720 / 9 = 80

8 0

3 years ago

Find the value of x in x+y=8 and x-y=6

Diano4ka-milaya [45]

Answer: x=-y+8 and x=y+6

Step-by-step explanation:

7 0

3 years ago

lillian drew a scale drawing of a county park. the scale she used was 1 inch : 4 yards. the picnic area is 80 yards wide in real

dangina [55]

The picnic area is 20 inches wide in the drawing in her scale of 1 inch : 4 yards.

<h3>What is unitary method ?</h3>

Unitary method is a technique for first solving the value of a single digit unit and from there we can find the value of any given unit.

According to the given question lillian drew a scale drawing of a county park. the scale she used was 1 inch : 4 yards.

The picnic area is 80 yards wide in real life.

∴ The width of the picnic area in here drawing in inches will be

= 80/4 inches.

= 20 inches.

learn more about unitary method here :

brainly.com/question/21648365

#SPJ4

4 0

2 years ago