In this problem we will assume that the car at 45 miles per hour is moving into the x direction with a high of 100 feet, and the train is going in the y direction, so they trajectories will made an angle of 90º.

Now we can calculate the speed of the trains in feet per second so:

$S1=\frac{45*5280}{3600}=66$

$S2=\frac{60*5280}{3600}=88$

So we can make a right triangle with sides 66 and 88 and the hypotenuse will be the rate that the trains will separate per second so:

$h=\sqrt{66^{2} +88^{2} } =\sqrt{4356+7744}$

$h=\sqrt{12100}=110$

Is important to have in mind that the initial high is not going to change how fast the trains will separate, however, if we are going to calculate the distance we should have it in the calculations.

7 0

3 years ago

Ronald is calculating the time required to fill the swimming pool at school. He found that it takes 15 minutes to fill the swimm

Alik [6]

Answer:

C. 9 gallons per minute

Step-by-step explanation:

Divide 135 by 15 to see how many gallons he can fill in one minute.

135 ÷ 15 = 9

Hope this helps!

6 0

2 years ago