Recent content by kitkat87

  1. K

    How Do You Calculate Tension and Acceleration in an Atwood Machine?

    Homework Statement In my workbook it gives an example and solution for the following question: The following diagram is of an atwood machine, which is a machine consisting of two masses: a massless string and a frictionless pulley. Due to the unequal masses on either end of the string, the...
  2. K

    What is the difference between above and below the horizontal?

    Homework Statement Some of the questions in my homework list the velocity either above or below the horizontal. I am confused as to what the difference is. This is the question: "A child sitting in a tree throws his apple core from where he is perched (4.0 m high) with a with a velocity of...
  3. K

    Ball caught by player, solve quadratic equation

    Homework Statement First part of the question (SOLVED) A football player kicks a football so that the angle of incidence is 50 DEG and the initial magnitude of velocity of the ball is 15 m/s. Find the: a) Balls maximum height = 6.7 m b) Time of flight = 2.3 s c) time when the ball reaches...
  4. K

    Rock thrown from cliff, find initial and final velocities

    Thank you both so much! you're amaz-o My entire workbook leaves the 9.8m/s^2 throughout all of the examples so I thought that it stayed that way. You've just made my life so much easier.
  5. K

    Rock thrown from cliff, find initial and final velocities

    Homework Statement I'm taking grade 12 U physics and I'm having a really difficult time understanding the answers given compared to the answers I arrive at. For example: The question reads: A rock was thrown horizontally from a 25.0 m high cliff and landed 15.0 m from the base of the cliff...
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