# Work Energy and Velocity

Not what you're looking for? Search our solutions OR ask your own Custom question.

A) Find the power input of a force F acting on a particle that moves with a velocity V for F=(6N)i - (5N)j and v = (-5 m/s)i + (4 m/s)j

B) What is the angle between them?

Â© BrainMass Inc. brainmass.com November 30, 2021, 12:15 am ad1c9bdddfhttps://brainmass.com/physics/work/work-energy-and-velocity-30698

#### Solution Preview

Work is defined as: dW = F*ds, where ds is the displacement segment (an infinitesimal part of the path).

The power is the rate of change in the work, thus: P = dW/dt = d/dt*F*ds

Since the ...

#### Solution Summary

This solution looks at the angle between a force acting on a particle, using a specified velocity and force. The exact degrees in angle is determined by using the power of the rate of change in work formula, as well as a cosine identity.

$2.49