All categories

3 years ago

A moving trailer with a speed of 70km/h slows down its speed by 15% within 30 seconds. calculate the declaration of the trailer.

Mathematics

1 answer:

antoniya [11.8K]3 years ago

7 0

Answer:

declaration = - 0.55 m/s²

Step-by-step explanation:

The declaration is a negative accelaration.

Therefore:

$a = \frac{v-u}{t}$

a = ?

v = 70 of 15% = 10.5 km/h to m/s = 2.9 m/s

u = 70 km/h to m/s = 19.4 m/s

t = 30 seconds

$a = \frac{2.9-19.4}{30}\\$

a = - 0.55 m/s²

You might be interested in

You deposit $100 in a savings account. The account earns 11% simple interest per year.

Gnesinka [82]

Answer:

Step-by-step explanation:

<h3>principle ( p ) = $100</h3><h3>time ( t ) = 10 years </h3><h3>rate ( r ) = 11%</h3><h3>simple interest = (p × r × t)÷ 100</h3><h3> = ( $100 × 11 × 10 )÷ 100</h3><h3> = 11000 ÷ 100</h3><h3> = $110</h3>

<h3>interest = simple interest - principle </h3><h3>interest = $110 - $100</h3><h3> = $10</h3>

<h2>MARK ME AS BRAINLIST</h2>

PLZ FOLLOW ME

5 0

2 years ago

Complete the table for the given rule. Rule: y = x + 3

devlian [24]

Answer:

Step-by-step explanation:

since there is no table included with the question I'm concluding that you need to find values of y using values of x, simply substitute the x values in the equation and you'll get the y value like this

if x = 1 y = 4

4 0

3 years ago

Read 2 more answers

HELP ASAP PLEASE!!!!!

Musya8 [376]

The rule for inscribed angles and their corresponding arcs is that the measure of the angle is one-half that of the arc. Therefore, all we have to do is divide 68/2, which gets us an answer of D. 34.

Hope this helps!

5 0

3 years ago

The cost of a bagel and a cup of coffee is $1.45. The cost of 3 bagels and a cup of coffee is $2.95. What is the cost of a cup o

seropon [69]

 The answer is 0.75.Hope this will help u....

8 0

3 years ago

YOOO MARKIN BRAINIEST !!

Brilliant_brown [7]

Y ≥ 2x-5
y-intercept is -5, from there go 2 up 1 over ( slope is rise over run)
greater than or equal so the line is connected
now find the shaded area by plugging in (0,0)
0 ≥2(0)-5
0 ≥-5 is correct so shade the area that to the left of the line, (the whole area that including (0,0))

y<-3x
y intercept is 0 so start from there and go down 3 right 1 (or go up 3 left 1)
broken like cause no or equal sign
the (0,0) is on the line so use (1,1) to find the answer
1<-3(1) is incorrect so shade the area that dies not include (1,1) or the entire area to the left of that line

you can see the section where both shaded area cross, thats the answer so erase every area you shaded that isn’t the answer so
THE ANSWER IS C

3 0

3 years ago

Read 2 more answers