When comparing the proper position for spotting different exercises, you can conclude that, in spotting any exercise, it is important to
a. stand with your feet together
b. keep your hand on the bar
c. keep your back upright
d. place your hand inside the lifter's hands

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.