An engineer is considering possible trajectories to use for emergency descent of a lunar module from low moon orbit to the lunar surface and decides it to) to investigate one for which the vertical component of velocity as a function of time is described by vy(t) = voe 2:2 where vo = 0.49 km/s, to = 390 s, and o = 65 s. Part F = to-o= 325 s? Recall that acceleration is For this trajectory, what would the vertical component of acceleration for the module be at time tm the derivative of velocity with respect to time.

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.