physics

A hammer with 10 J of kinetic energy hits a nail and pushes it 5.0 mm into a plank.
Both the hammer and nail come to rest after the collision.
What is the average force that acts on the nail while it moves the 5.0 mm?

  1. 👍 1
  2. 👎 0
  3. 👁 557
  1. KE=mv²/2
    v²= 2•KE/m
    a= v²/2s
    F=ma=mv²/2s= 2m•KE/2s m=
    = KE/s=10/0.005 =2000 N

    1. 👍 5
    2. 👎 1
    posted by Elena
  2. 74161

    1. 👍 0
    2. 👎 2
    posted by l,mpkml

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 13 g nail when it is struck by a 550 g hammer moving with an initial speed of 4.0 m/s. I solved for

    asked by Kelly on April 27, 2010
  2. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 13 g nail when it is struck by a 550 g hammer moving with an initial speed of 4.0 m/s. I solved for

    asked by Kelly on April 27, 2010
  3. physics

    20. does the international space station have gravitational pe? ke? explain? -It has gravitation pe. I thought that Gravitational potential energy is the energy stored in an object as the result of its vertical position or height?

    asked by jess on October 17, 2007
  4. physics

    please check my answers. 20. does the international space station have gravitational pe? ke? explain? -It has gravitation pe. I thought that Gravitational potential energy is the energy stored in an object as the result of its

    asked by jess on October 16, 2007
  5. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.

    asked by Ryan on March 3, 2010
  6. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 15 g nail when it is struck by a 550 g hammer moving with an initial speed of 5.1 m/s.

    asked by Ryan on March 3, 2010
  7. physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 10-g nail when it is struck by a 550-g hammer moving with an initial speed of 3.8 m/s.

    asked by stoic-rider77 on November 2, 2012
  8. physics

    The collision between a nail and hammer can be considered to be approximately elastic. Calculate the kinetic energy acquired by a 12gm nail when it is struck by a 550 gm hammer moving with an initial speed of 4.5 m/sec.

    asked by pakilina on November 25, 2011
  9. Physics

    The collision between a hammer and a nail can be considered to be approximately elastic. Estimate the kinetic energy acquired by a 13 g nail when it is struck by a 550 g hammer moving with an initial speed of 4.1 m/s. I am

    asked by Carden on April 29, 2010
  10. Physics

    A farmer drives a 0.100 kg iron spike with a 2.00 kg sledge hammer. The sledge hammer moves at a constant speed of 3.99 m/s until it comes to rest on the spike after each swing. Assuming all the energy is absorbed by the nail, and

    asked by Holly on January 16, 2014

More Similar Questions