Problem Solving In Motion

Problem Solving In Motion-13
It would be extremely unexpected for a car to be able to travel down a street through the middle of a town without having to alter its speed any.

It would be extremely unexpected for a car to be able to travel down a street through the middle of a town without having to alter its speed any.

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Uniform motion refers to motion that does not change.

You would expect to find uniform motion on the interstate with cars traveling at a 'uniform' speed of 70 mph with no traffic lights to slow traffic.

The good news is that because the motion is uniform, the formula is quite straightforward and easy to work with.

The formula for uniform motion is d = rt, meaning distance is equal to rate times time.

Since distance is equal to the product of the rate and time, the table would look like the figure below.

Therefore, if we add the two distances traveled, we have .This is the second part of the Solving Motion Problems Series, a part of the Math Word Problem Solving Series.In the first part, we have learned that , where is the distance traveled by an object, is the rate, and is the time. One train is traveling east at an average speed of 90 kilometers per hour, while the other train is traveling west an average speed of 120 kilometers per hour.At 10 am another car (B) started traveling from the same point at 60 mph in the same direction as car (A). Two trains, traveling towards each other, left from two stations that are 900 miles apart, at 4 pm.If the rate of the first train is 72 mph and the rate of the second train is 78 mph, at whatt time will they pass each other? She stopped for lunch then drove for another 3 hours at a rate that is 10 mph higher than the rate before she had lunch.Also, remember that sometimes there will be additional steps required after your solution is found. Look for things that are the same and always look for those variables to determine what you know and what you need to find.Don't forget to format your answer in terms of the problem. We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities.Lastly, the time duration the two trains traveling are equal. We let be the travel time of each plane (remember, they are equal).Since the distance is the product of the rate and the time, the distances traveled by the east-bound and west-bound train is and respectively. The second problem is just almost the same as the first problem.To solve uniform motion problems, you will be given two of the variables mentioned and will need to use algebraic methods to solve for the third.If you aren't given two variables, you can't solve uniform motion problems. Now, just substitute the known values into the formula and solve.


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