A12.0n force with a fixed orientation does work on a
particleas the particle moves through displacement d=(2.00i -4.00j
+3.00k)m. what is the angle between the force and thedisplacement
if the change in the particle's kinetic energy is a)+30.0j and b)
-30.0j ?

(a)

(b)

Explanation:

It is given that,

Force acting on the particle, F = 12 N

Displacement of the particle,

Magnitude of displacement,

(a) If the change in the kinetic energy of the particle is +30 J. The work done by the particle is given by :

is the angle between force and the displacement

According to work energy theorem, the charge in kinetic energy of the particle is equal to the work done.

So,

(b) If the change in the kinetic energy of the particle is (-30) J. The work done by the particle is given by :

Hence, this is the required solution.

you go to your settings preference and in the end youll see sth that says "i want to delete my acc" click on it and u'll acc will be deleted but u have to wait.

technology is the application of the knowledge gained by science.