Post a New Question

Physics

posted by .

Force F causes displacement d of a 20-Kg object starting from rest along a frictionless path. F= 10 N i + 50 N j + 15 N k and d= 10 m i + 60 m k

A) Calculate the work done by the force.
B) Calculate the angle between the vectors F and d.
C) Calculate the final speed of the object.

  • Physics -

    A) The work done is the scalar product of the F and d vectors.

    B) The cosine of the angle between the two vectors is the ratio of the scalar product (obtained in part (A)) to the product of the magnitudes os the F and d vectors.

    C) I do not understand why the displacement is not in the direction of the force, since it starts out motionless and there is no friction

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question