Question

In t hours the train has traveled s miles. Find the formula for v, the speed of the train (in mph) in terms of t and s. Find the value of v when:

t=3, s=180

Answer 1

Speed of the train is 60 mph.

Explanation:

Given:

In t hours the train has traveled s miles.

t= 3 hrs

s= 180 miles

W need to find the formula for v, the speed of the train (in mph) in terms of t and s.

Also we need to calculate v.

Now by the definition of speed which is stated below.

"Speed is defined as the distance covered by an object per unit time."

"So, mathematically, speed of train v mph is equal to distance traveled by the train s miles divided by time t hours which it takes to cover the distance."

`v=(s)/(t)\\`

Now Substituting given values of t and s in above equation we get.

v=
`v=(180)/(3)=60 \ mph`

Speed of the train is 60 mph