Physics

A projectile is launched at an angle of 34.0o above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. a) What is the initial kinetic energy of the projectile? b) By how much does the gravitational potential energy of the projectile change as the projectile moves from its initial position to the highest vertical point in its motion? c) What is the maximum height reached by the projectile?

  1. 👍 0
  2. 👎 0
  3. 👁 204
asked by John
  1. (a)
    KE=(1/2)mv²

    (b)
    At maximum height,
    KE in y-direction = 0, i.e.
    loss in KE
    =(1/2)m(v sin(θ))²

    (c)
    Maximum height, h
    equate mgh to loss in KE, or
    mgh = (1/2)m(v sin(θ))²

    Solve for h.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point

    asked by Priya on September 15, 2014
  2. Physics

    A projectile is launched with an initial speed of 40m/s at an angle of 25 degrees above the horizontal. The projectile lands 3 sec. later. Neglect air friction. What is the projectile's velocity at the highest point of it's

    asked by Lady22 on February 24, 2011
  3. Physics

    A projectile is launched with an initial speed of 59.0 m/s at an angle of 32.0° above the horizontal. The projectile lands on a hillside 3.80 s later. Neglect air friction. (Assume that the +x-axis is to the right and the +y-axis

    asked by Mary on February 17, 2016
  4. physics

    The highest barrier that a projectile can clear is 13.4 m, when the projectile is launched at an angle of 11.0o above the horizontal. What is the projectile’s launch speed?

    asked by brain on June 27, 2013
  5. general physics

    The highest barrier that a projectile can clear is 18.8 m, when the projectile is launched at an angle of 59.0 ° above the horizontal. What is the projectile's launch speed?

    asked by vinny on July 3, 2013
  6. physics

    The highest barrier that a projectile can clear is 11.5 m, when the projectile is launched at an angle of 15.4° above the horizontal. What is the projectile's launch speed?

    asked by Sharienia on September 9, 2012
  7. Physics

    The highest barrier that a projectile can clear is 14.5 m, when the projectile is launched at an angle of 31.0 ° above the horizontal. What is the projectile's launch speed?

    asked by Heather on October 15, 2011
  8. physics

    The highest barrier that a projectile can clear is 15.8 m, when the projectile is launched at an angle of 13.4° above the horizontal. What is the projectile's launch speed?

    asked by Nick on October 22, 2011
  9. physics

    The highest barrier that a projectile can clear is 12.7 m, when the projectile is launched at an angle of 17.5° above the horizontal. What is the projectile's launch speed?

    asked by loweri on February 11, 2012
  10. memorial university

    The highest barrier that a projectile can clear is 13.8 m, when the projectile is launched at an angle of 14.9° above the horizontal. What is the projectile's launch speed?

    asked by obinna on October 19, 2011

More Similar Questions