A test question that has been bugging me all day.(cant figure it out)

In summary, the problem involves a particle with a mass of 25g rolling up an inclined plane of 20 degrees with an initial velocity of 3.0m/s. At point x2, the velocity is 1.0m/s and there is a frictional force of .4. The question is asking for the acceleration due to friction. The person has been thinking about it since 3 and has tried using the formula K1+U1-Wother=K2+U2 and is unsure if the frictional force is in Newtons or the coefficient of friction, with the answer being the coefficient of kinetic friction.
  • #1
HappMatt
94
0
well i had a test today and one of the questions was this.

:A particle particle mass of 25g rolls up and inclined palne of 20 degree with a Velocity intial of 3.0m/s, there is a frictional force of .4 and at point x2 the velocity is 1.0m/s

What is the acceleration due to friction?

I have been thinking about this since 3 and had to work but i was on my mind the whoe time. I've tried useing K1+U1-Wother=K2+U2
if you can lead me as to where to go with this it would be appreciated.
 
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  • #2
Is that the frictional force in Newtons or the coefficient of friction?
 
  • #3
that would be the coeff of Fkinetic
 

Related to A test question that has been bugging me all day.(cant figure it out)

1. How do I approach a test question that I can't figure out?

When faced with a difficult test question, it's important to stay calm and focused. Start by carefully reading the question and identifying any key words or phrases that may help you understand it. Then, use any relevant information or formulas that you have learned to try and solve the question. If you're still struggling, don't be afraid to ask your teacher or a classmate for help.

2. Should I skip a test question that I can't figure out?

It's generally not recommended to skip a test question, especially if it's worth a significant amount of points. Even if you're not sure of the answer, it's always better to make an educated guess than to leave it blank. Plus, sometimes working through a difficult question can help you understand the material better.

3. How much time should I spend on a test question that I can't figure out?

This will depend on the length of the test and the number of questions. Generally, it's a good idea to budget your time so that you have enough time to answer each question. If you find yourself spending too much time on one question, it might be best to move on and come back to it later if time allows.

4. What do I do if I still can't figure out a test question after trying multiple times?

If you've tried multiple times and still can't figure out a test question, it's important to not get discouraged. Take a deep breath and move on to the next question. If you have time at the end, you can always go back and try again. But don't let one difficult question affect the rest of your test performance.

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The best way to improve your ability to answer difficult test questions is to practice. Make sure you understand the material and study regularly to reinforce your understanding. Additionally, try to develop critical thinking and problem-solving skills, as these will come in handy when faced with challenging questions on a test.

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