1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B Question about getting Force

  1. Jun 21, 2017 #1
    can we get Force with velocity and mass only?
  2. jcsd
  3. Jun 21, 2017 #2


    User Avatar
    2017 Award

    Staff: Mentor

    Force of what, where, in which setup? Mass and velocity of what?

    Your question is way too vague to answer.

    Is this a homework problem?
  4. Jun 22, 2017 #3
    No it isn't. Like the force of a punch or a rocket
  5. Jun 22, 2017 #4


    User Avatar
    2017 Award

    Staff: Mentor

    Not without context.

    A rocket at a given mass and velocity can either use its thrusters or not use them. The resulting force will be very different.
  6. Jun 22, 2017 #5


    User Avatar

    Staff: Mentor

    I think you mean impact force? An object in motion does not just "have force".

    And the answer is still no: force for an impact(collision) is determined by the rate of deceleration, which depends also on the structure of the objects colliding. It doesn't have a single value and the variation throughout the impact can be very complex.
  7. Jun 23, 2017 #6
    Do you mean formula ## F=\frac{dp}{dt}=m\cdot\frac{dv}{dt}##?
  8. Jun 25, 2017 #7

    David Lewis

    User Avatar
    Gold Member

    It takes force to change the velocity of a mass.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted

Similar Discussions: Question about getting Force
  1. Question about force (Replies: 4)