Original Project
Force and Motion
If a force acts on an object in the same direction as the direction of its motion, the object’s speed will con…
Item FM101001: If an object is moving forward, and a force pushing it backward is greater than a force pushing forward, the object will slow down, stop, and then begin to move faster and faster in the opposite direction.
What will happen to an object that is moving forward if a force pushing it backward is greater than the force pushing it forward?
- The object will move at constant speed for a while and then slow down and stop.
- The object will slow down for a while and then move at a slower constant speed.
- The object will slow down, stop, and then begin to move faster and faster in the opposite direction.
- The object will slow down, stop, and then begin to move at a constant speed in the opposite direction.
- Distribution of Responses
- Students Responding Correctly
| Group | Correct | Total | Percent |
|---|---|---|---|
| Overall | 575 | 1795 | 32% |
| Grades | |||
| 6–8 | 345 | 1125 | 31% |
| 9–12 | 228 | 662 | 34% |
| Gender | |||
| Male | 292 | 830 | 35% |
| Female | 271 | 919 | 29% |
| Primary Language | |||
| English | 516 | 1581 | 33% |
| Other | 45 | 179 | 25% |
- Disciplinary Core Ideas
- PS2.A The motion of an object is determined by the sum of the forces acting on it; if the total force on the object is not zero, its motion will change. The greater the mass of the object, the greater the force needed to achieve the same change in motion. For any given object, a larger force causes a larger change in motion.
PS2.A Newton's second law accurately predicts changes in the motion of macroscopic objects.