Question

forces that change motion quick check
a net force is applied to a moving object. which statement best describes the effect of the force?
(1 point)
the force will not cause a change in the momentum of the object
the force will cause a change in the momentum of the object
the force will cause the object to come to a stop.
the force will cause the speed of the object to increase.

Explanation:

According to Newton's second law of motion, \(F = \frac{\Delta p}{\Delta t}\), where \(F\) is the net force, \(\Delta p\) is the change in momentum, and \(\Delta t\) is the time interval. When a net force (\(F
eq0\)) is applied, \(\Delta p
eq0\), which means the momentum of the object changes.

• Option 1: Since \(F

eq0\), from \(F = \frac{\Delta p}{\Delta t}\), \(\Delta p
eq0\), so this option is wrong.

• Option 3: A net force doesn't necessarily make the object stop. It depends on the direction of the force. For example, if the force is in the same direction as the motion, the object will speed up.
• Option 4: The force could also slow the object down if it is in the opposite direction of the motion.

Answer:

The force will cause a change in the momentum of the object.