A0.200-kilogram ball sits on a shelf 2.00 meters from the floor and then falls to a point 1.00 meter from the floor. ignoring any affects due to friction, at this position its mechanical energy is 3.92 j its potential energy is 3.92 j its kinetic energy is 3.92 j its potential energy is 1.96 j its kinetic energy is 1.96 j its mechanical energy is 1.96 j

Its mechanical energy is 3.92 J

Its potential energy is 1.96 J

Its kinetic energy is 1.96 J

electrical power

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west