1. Steve pushes a box across a level floor with a constant horizontal force. This causes the box to move at a constant speed, v. The force from Steve: a. has the same magnitude as the weight of the box. b. equals the sum of the box's weight and the total frictional forces opposing the box's motion. c. has the same magnitude as the frictional forces opposing the box's motion. d. has greater magnitude than the frictional forces opposing the box's motion. e. has greater magnitude than the weight of the box. 2. Steve now doubles the force he applies to th box from the previous problem. Which of the following is true? a. The box will move at double the previous speed. b. The box will move with a continuously increasing speed. c. The box will increase speed for a while, then move at a constant speed. d. The box will continue to move at the same speed for a while, then continually increase speed. e. The box will move at a greater constant speed, but not necessarily double the speed.
1. Steve pushes a box across a level floor with a constant horizontal force. This causes the box to move at a constant speed, v. The force from Steve:
a. has the same magnitude as the weight of the box.
b. equals the sum of the box's weight and the total frictional forces opposing the box's motion.
c. has the same magnitude as the frictional forces opposing the box's motion.
d. has greater magnitude than the frictional forces opposing the box's motion.
e. has greater magnitude than the weight of the box.
2. Steve now doubles the force he applies to th box from the previous problem. Which of the following is true?
a. The box will move at double the previous speed.
b. The box will move with a continuously increasing speed.
c. The box will increase speed for a while, then move at a constant speed.
d. The box will continue to move at the same speed for a while, then continually increase speed.
e. The box will move at a greater constant speed, but not necessarily double the speed.
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