All categories

2 years ago

A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is its acceleration?

Mathematics

1 answer:

12345 [234]2 years ago

6 0

Answer:

$a=0.8\bar{3}m/s^2$

Step-by-step explanation:

$a=\frac{v}{t} \\a=\frac{25m/s}{30s}\\ \\a=0.8\bar{3}m/s^2$

You might be interested in

Can you please help thanks

katrin2010 [14]

Answer:5/2a + 10/3b

Step-by-step explanation:

(1/6)(15a+20b)

=(1/6)(15a)+(1/6)(20b)

6 0

3 years ago

Tom opens a bank account and makes an initial deposit of 500$. Then banker tells Tom that he is going to receive an annual rate

Arturiano [62]

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$500\\ r=rate\to 6\%\to \frac{6}{100}\dotfill &0.06\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &15 \end{cases} \\\\\\ A=500\left(1+\frac{0.06}{1}\right)^{1\cdot 15}\implies A=500(1.06)^{15}\implies A\approx 1198.28$

5 0

2 years ago

What is the distance to the earth’s horizon from point P?<br><br> Express your answer as a decimal

rewona [7]

Answer:

The distance to the earth's horizon from point P is 216.2198187 mi, appriximately 216.22 mi

Step-by-step explanation:

This is a right triangle:

Hypotenuse: c=3959 mi + 5.9 mi → c=3964.9 mi

Leg 1: a=x=?

Leg 2: b=3959 mi

Using the Pytagorean theorem:

a^2+b^2=c^2

Replacing the known values:

(x)^2+(3959 mi)^2=(3964.9 mi)^2

Solving for x: Squaring:

x^2+15,673,681 mi^2=15,720,432.01 mi^2

Subtracting 15,673,681 mi^2 both sides of the equation:

x^2+15,673,681 mi^2-15,673,681 mi^2=15,720,432.01 mi^2-15,673,681 mi^2

x^2=46,751.01 mi^2

Square root both sides of the equation:

sqrt(x^2)=sqrt(46,751.01 mi^2)

x=216.2198187 mi

x=216.22 mi

3 0

3 years ago

Convert the following measurements. Round your answers to two decimal places. a. 14,974 pounds to tons b. 8,047 ounces to pounds

Vikki [24]

For this case we have to know the following conversions:
$1 ton = 2204.62 pounds

1 oz = 0.0625 pounds$
Now we apply the conversions:

14,974 pounds to tons:
$(14974) * (1 / 2204.62) = 6.79 tons
$

8,047 ounces to pounds:
$(8047) * (0.0625) = 502.94 pounds
$

64 ounces to pounds:
$(64) * (0.0625) = 4 pounds
$

27 ton to pounds:
$(27) * (2204.62) = 59524.74 pounds$

5 0

3 years ago

Read 2 more answers

How can i find the answer to 188x31?

eduard

The answer to 188x31 is 5,828

7 0

3 years ago