Ball A was carried to the top of a hill in a straight line, while ball B was carried in a longer, zigzag path. At the top of the hill, both balls were left at rest. A student draws a graph that depicts each ball's final potential energy. Which statement describes the final potential energy of the balls?(1 point) Responses Neither ball has any potential energy. Neither ball has any potential energy. Ball A has more potential energy. Ball A has more potential energy. Ball B has more potential energy. Ball B has more potential energy. Both balls have equal potential energy.
A swimmer jumps from a diving board into a pool. What would a graph of the swimmer's potential energy and total mechanical energy look like?(1 point) Responses Potential energy would increase, while total mechanical energy would remain constant. Potential energy would increase, while total mechanical energy would remain constant. Potential energy would decrease, while total mechanical energy would remain constant. Potential energy would decrease, while total mechanical energy would remain constant. Potential energy would remain constant, while total mechanical energy would increase. Potential energy would remain constant, while total mechanical energy would increase. Potential energy would remain constant, while total mechanical energy would decrease.
Potential energy would decrease, while total mechanical energy would remain constant.
A student wants to design an experiment to study the transformation of mechanical energy. Which object can be used to investigate how gravitational potential energy transforms into kinetic energy?(1 point) Responses a rug a rug a spring a spring a flat race car track a flat race car track a slide
A slide.
A ball falls from a shelf. Assuming there is no friction, why is the conservation of mechanical energy independent of mass?(1 point) Responses Mass is eliminated when equating gravitational potential energy with kinetic energy. Mass is eliminated when equating gravitational potential energy with kinetic energy. The displacement of the ball is insignificant compared with Earth's size. The displacement of the ball is insignificant compared with Earth's size. Mass is eliminated when equating elastic potential energy with kinetic energy. Mass is eliminated when equating elastic potential energy with kinetic energy. The mass of the ball is insignificant compared with the mass of Earth.
Mass is eliminated when equating gravitational potential energy with kinetic energy.
A marble is attached to a compressed horizontal spring and is then released. Which equation correctly shows the conservation of mechanical energy for this system? (1 point) Responses 12mv2=12kx2 1 half m v squared is equal to 1 half k x squared mgh=kx2 mg h is equal to k x squared mgh=12kx2 mg h is equal to 1 half k x squared 12mv2=kx2
