A constant force acts on a 5.0 kg object and reduces its velocity from 7.0 m/s to 3.0 m/s in a time of 3.0 s. Find the force.

  1. 👍
  2. 👎
  3. 👁
  1. V = Vo + a*t.
    3 = 7 + a*3, a = - 1.333 m/s^2.

    F = M*a = 5 * (-1.33) = -6.67 N.

    The negative sign means that the force opposes the movement of the object.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A constant net force acts on an object. Describe the motion of the object. a) constant acceleration b) constant speed c) constant velocity d) increasing acceleration I believe the answer would be a) constant acceleration. Given

  2. Algebra

    Suppose that a constant force is applied to an object. Newton's Second Law of Motion states that the acceleration of the object varies inversely with its mass. A constant force acting upon an object with mass 12 kg produces an

  3. physics

    Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is

  4. physics

    true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal

  1. Physics

    Three forces act on an object. A 4 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?

  2. Physics

    A 2-kg object has a velocity of 22i m/s at t = 0. A constant resultant force of (2.0i + 4.0j) N then acts on the object for 12 s. What is the magnitude of the object’s velocity at the end of the interval?

  3. physics

    A constant 6.0N net force acts for 4.0 s on a 12 kg object. what is the objects change of velocity

  4. Physics

    Under what condition can a force act on an object and yet do no work on that object? A. The object moves with no acceleration. B. The object does not move. C. The net force on the object is 0. D. The force operates under constant

  1. Physics

    A 15 N force is needed to move an object with constant velocity of 5 m/s. What power must be delivered to the object by the force? I konw that P=W/t and W=Fd But other than that I am confused . I am not sure how i would solve this

  2. Physics please help?????

    (a) At a certain instant, a particle-like object is acted on by a force F=(2.9N)i-(1.7N)j+(5.7N)k while the object's velocity is v= -(3.2m/s)i+(4.5m/s)k. What is the instantaneous rate at which the force does work on the object?


    a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity?

  4. physical science

    What is needed for work to be done? A force must punch on an object without moving it A force must pull on an object without moving it A force must cause an object to move along the same direction as the force A force must act on

You can view more similar questions or ask a new question.