![]() For instance, by traveling at 80 miles/hr for half of the trip and 64 miles/hour for the other half, we will still travel 60 miles in 50 minutes - 72 miles/hour = 60 miles/50 min = ? However, this is only true if travel at one speed for the entire trip. For instance, in the example problem above, we concluded that to travel 60 miles in 50 minutes, we'd need to travel at 72 miles/hour.In real life, however, this model often doesn't accurately reflect the motion of moving objects, which can, in reality, speed up, slow down, stop, and reverse over time. For abstract math problems, such as the ones you may encounter in an academic setting, sometimes it's still possible to model an object's motion using this assumption. The distance formula assumes that the moving object has constant speed - in other words, it assumes that the object in motion is moving at a single, unchanging rate of speed. It's important to understand that the basic distance formula offers a simplified view of the movement of an object. Note that the "s avg" variable in the distance formula refers to average speed. To get your answer in the more common form of miles/hour, multiply it by 60 minutes/hour to get 72 miles/hour. Note that in our example, our answer for speed has an uncommon units (miles/minute).In this case, we might isolate the s avg variable in the basic distance equation to get s avg = d/t, then simply divide 60 miles / 50 minutes to get an answer of 1.2 miles/minute. For instance, let's say that we know that a car has driven 60 miles in 50 minutes, but we don't have a value for the average speed while traveling.In other words, to find your object's average speed, use the equation s avg = d/t and to find to find the time an object has been traveling, use the equation t = d/s avg. Simply isolate the variable you want to solve for according to the basic rules of algebra, then insert values for your other two variables to find the value for the third. The simplicity of the basic distance equation (d = s avg × t) makes it quite easy to use the equation for finding the values of variables besides distance. Manipulate the equation to solve for other variables.
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