A roller coaster car is traveling on a track without any friction or added energy. The people, car, and track of the roller coaster can be analyzed as a single system. The total amount of energy in the roller coaster system is the same at all times. Any increase in the car’s kinetic energy equals a decrease in the system’s potential energy .

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

Why are graphs useful when interpreting data