A person uses a simple machine to perform a task. He exerts 105 N of force, which the machine increases to 555 N of force. What is the machine’s mechanical advantage?

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration