How Do You Calculate Total Distance with Different Speeds?

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In summary, the conversation discusses solving a physics problem involving an object traveling at different velocities for a specific amount of time. The speaker suggests using the formula for distance traveled and points out a flaw in the given information. They also mention the possibility of neglecting a short deceleration phase in the problem.
  • #1
SpeedeRi2
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Im not really good at physics :blushing: , so if u could solve the problem or help me through it! Any help will be appreciated!



1.) An object travels in a straight line at a uniform velocity of 10 m/s for 3 seconds and then travels for 2 seconds at a constant speed of 5 meters per second in the same direction. Calculate the total distance traveled!
 
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  • #2
Tell your teacher that the problem is flawed. If the object was initially traveling at 10m/s, then it must have decelerated in order to reach 5 m/s. Yet, no information was provided for the time or magnitude of the deceleration.
 
  • #3
remember that distance travled is equal to the velocity times the time (s=v*t). Do this for both velocities and add them together.
 
  • #4
Triss said:
remember that distance travled is equal to the velocity times the time (s=v*t). Do this for both velocities and add them together.

If your teacher is the kind of teacher with his/her head in equation-land all the time with no time for reality, you could do this.
 
  • #5
recon said:
If your teacher is the kind of teacher with his/her head in equation-land all the time with no time for reality, you could do this.
I agree; the very least would have been to insert a sentence like:
"The deceleration phase is so short that we neglect any distance traveled in that period"
 

FAQ: How Do You Calculate Total Distance with Different Speeds?

What is the problem asking for?

The first step in solving a physics problem is understanding what the problem is asking for. This could include finding a specific value, solving for an unknown variable, or determining a relationship between different quantities. Make sure to carefully read the problem and identify what information is given and what is being asked for.

What equations should I use to solve the problem?

Physics problems often involve using equations to solve for unknown quantities. It is important to choose the correct equation(s) for the problem at hand. This may involve rearranging equations or using multiple equations to solve for the desired quantity. Refer to your textbook or notes for a list of relevant equations and their applications.

How do I set up the problem?

Once you have identified what the problem is asking for and which equations to use, the next step is to set up the problem. This involves plugging in known values and rearranging equations to solve for the desired quantity. Make sure to pay attention to units and conversions, as well as any special conditions or assumptions given in the problem.

What assumptions can I make?

Physics problems may involve simplifying assumptions in order to make the problem more manageable. It is important to carefully read the problem and identify any assumptions that can be made. This could include neglecting air resistance, assuming objects are in a vacuum, or assuming certain values are constant. Be sure to clearly state any assumptions made in your solution.

How do I check my answer?

After solving the problem, it is important to check your answer for accuracy and reasonableness. This could involve plugging your answer back into the original equation to see if it satisfies the given conditions, or using dimensional analysis to ensure your answer has the correct units. If your answer does not make sense or does not match the given conditions, double check your calculations and assumptions.

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