Consider a system consisting of a uniform 3.0-m long seesaw that has a mass of 40 kg and two people of masses 60 kg and 75 kg sitting on its ends. find the position of the center of mass of the system relative to the seesaw's midpoint.

What is a possible result of higher air temperature caused by global warming

Sound is a disturbance that travels through a medium as a

Aball with a mass of 275 g is dropped from rest, hits the floor and rebounds upward. if the ball hits the floor with a speed of 2.40 m/s and rebounds with a speed of 1.70 m/s, determine the following. (a) magnitude of the change in the ball's momentum (let up be in the positive direction.)