Recent content by kfink85

  1. K

    Potential Energy Questions - I'm lost, help

    What about the vectors? Do I set this up with X and Y components? I understand and agree with what you said but I'm lost.
  2. K

    Potential Energy Questions - I'm lost, help

    1. A daredevil on a motorcycle leaves the end of a ramp with a speed of 35 m/s. If his speed is 33 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance. I don't know how to approach this problem or set it up? Do I use...
  3. K

    Solving Energy Questions: Force, Gravity, Kinetic Energy

    Here are a couple problems that I have been attempting to do but I am not sure if I am doing them right. 1. A block of mass 2.50 kg is pushed 2.20 m along a frictionless horizontal table by a constant 16.0-N force directed 25 degrees below the horizontal. Determine the work done by (a) the...
  4. K

    How Do You Solve This Newton's Law of Motion Problem?

    Here is the problem. I think I set it up right but I am stumped now. An object with mass m1=5.00 kg rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2=10.0 kg. Find the acceleration of each object...
  5. K

    Solve 1-D Motion Problem: Find Vo & a

    Thanks for your help. I really appreciate it. I got 6.62 m/s for part A and used V=Vo+at to get -.45m/s^2 on part B. I hope this is correct. I'm pretty sure A is. Can anyone confirm?
  6. K

    Solve 1-D Motion Problem: Find Vo & a

    I found it to be 4.71 m/s but I'm still stuck. Where do I go next?
  7. K

    Solve 1-D Motion Problem: Find Vo & a

    A truck covers 40.0 m in 8.50 s while smoothly slowing down to a final speed of 2.80 m/s. (a) Find the truck's original speed. (b) Find it's acceleration. I used the 2nd formula originally (X=VoT+1/2aT^2) but I wasn't getting anywhere. Can someone point me in the right direction on how to do...
  8. K

    Easy Guide: Converting km/h to m/s in Physics Class

    I am in my first physics class and the professor just kinda skimmed over this but I am lost on how to convert km/h to m/s. What's the explanation on how to convert 82.4 km/h to m/s? Thanks in advance for any help.
  9. K

    Calculating Distance: Solving a Velocity Problem with Runners A and B

    I just transferred to UMD and want to do well in this course because I need a C or better to get into my major (Psychology). So any help on the problem would be much appreciated. I got through most of them fine except this one. I am stumped. :-p 1. Runner A is initially 4.0 mi west of a...
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