19. A rocket is traveling straight up away from the ground and is steadily speeding up. Which statement is correct? (Ass

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19 A Rocket Is Traveling Straight Up Away From The Ground And Is Steadily Speeding Up Which Statement Is Correct Ass 1 (111.97 KiB) Viewed 25 times

19. A rocket is traveling straight up away from the ground and is steadily speeding up. Which statement is correct? (Assume that drag is so small that it can be ignored.) (a) the rocket must be weightless (b) the upward thrust force on the rocket is equal in magnitude to its weight (c) the upward thrust force on the rocket is smaller in magnitude than its weight (d) the upward thrust force on the rocket is greater in magnitude than its weight 20. A certain plastic fan blade has the same total mass and shape as a certain metal fan blade. However, the plastic fan blade is much larger in radius than the metal fan blade. Which fan blade requires more torque to get it from motionless to 100 rad/s in two seconds? (a) no torque is required (b) they are the same (c) the metal fan blade (d) the plastic fan blade