As a 500-kg Moon lander is descending toward the surface, its thruster fires an upward force. At a height of 50 m, the lander's velocity is 9.5 m/s downward. At a height of 5 m, its velocity is 0.5 m/s downward. The Moon's gravitational field strength near its surface is 1.6 N/kg. Assume the mass of the lander remains nearly constant during the process. Part 1 What is the average y-velocity of the lander during this displacement? Vavg.y = Save for Later Part 2 What is the time interval during which this displacement occurs? At = i m/s 5 Attempts: 0 of 4 used Submit Answer What is the time interval during which this displacement occurs? At = Save for Later Part 3 What is the y-component of the average net force on the lander during this time interval? Fnet.y = i N eTextbook and Media S Save for Later Attempts: 0 of 4 used Attempts: 0 of 4 used Submit Answer Submit Answer