4. which of the following statements are true of an object that experiences balanced forces (or unbalanced…

4. which of the following statements are true of an object that experiences balanced forces (or unbalanced forces)? list all that apply.\na. if a person is moving to the right at constant velocity, then the forces acting upon it are not balanced.\nb. a balance of forces is demonstrated by an object which is slowing to a stop.\nc. it would take an unbalanced force to keep an object in motion.\nd. if an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced.\ne. if an object is accelerating at a constant rate of acceleration, then the forces acting upon the object are balanced.\nf. it is not possible for just three forces to be acting upon an object and they still balance each other.\ng. a free - falling object experiences a balance of forces.\nh. balanced forces cause stationary objects to remain at rest and moving objects to come to rest.

4. which of the following statements are true of an object that experiences balanced forces (or unbalanced forces)? list all that apply.\na. if a person is moving to the right at constant velocity, then the forces acting upon it are not balanced.\nb. a balance of forces is demonstrated by an object which is slowing to a stop.\nc. it would take an unbalanced force to keep an object in motion.\nd. if an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced.\ne. if an object is accelerating at a constant rate of acceleration, then the forces acting upon the object are balanced.\nf. it is not possible for just three forces to be acting upon an object and they still balance each other.\ng. a free - falling object experiences a balance of forces.\nh. balanced forces cause stationary objects to remain at rest and moving objects to come to rest.

Answer

Brief Explanations:

  • Option A: When moving at constant velocity, acceleration (a = 0). By Newton's second law (F=ma), net force (F = 0), so forces are balanced. This option is false.
  • Option B: An object slowing to a stop has non - zero acceleration. By (F = ma), net force is non - zero (unbalanced). This option is false.
  • Option C: An object in motion (with constant velocity) has balanced forces. To change its state (keep it in motion when there might be opposing forces like friction), an unbalanced force is not needed if already in motion with balanced forces. This option is false.
  • Option D: Moving in a circle (even at constant speed) means changing direction. Velocity (a vector) changes, so there is acceleration. By (F=ma), net force is non - zero (unbalanced). This option is false.
  • Option E: Accelerating ((a\neq0)) implies (F = ma\neq0) (unbalanced forces). This option is false.
  • Option F: Three forces can balance. For example, three forces in equilibrium (e.g., in a plane with vectors summing to zero). This option is false.
  • Option G: A free - falling object has acceleration (a = g) (near Earth's surface). By (F=ma), net force (F = mg) (unbalanced). This option is false.
  • Option H: Balanced forces mean (F_{net}=0). For a stationary object ((v = 0)), (a = 0) (remains at rest). For a moving object ((v\neq0)), (a = 0) (moves at constant velocity, not come to rest). This option is false.

Answer:

None of the options (A - H) are correct.