The net force on an object is in the positive x-direction.Consider the following statements.
(I)The object can be moving in the negative x-direction.
(II)The object can be speeding up.
(III)The object can be slowing down.
(IV)The object can be moving in the positive y-direction.
Which of the statements are true?
A)(I)and (II)
B)(II)and (III)
C)(III)and (IV)
D)Choose this answer if all the statements are true.

Question

Quizplus · Accepted Answer

All the statements are true. A net force in the positive x-direction means the acceleration of the object is in the positive x-direction. (I) An object can be moving in the negative x-direction but slowing down due to the force in the opposite direction. (II) The object can be speeding up if it was already moving in the positive x-direction or if it was moving in the negative x-direction and the force has now overcome its velocity, causing it to accelerate. (III) An object moving in the negative x-direction can be slowing down if the force in the positive x-direction is reducing its negative velocity. (IV) The object can also be moving in the positive y-direction, as the force in the x-direction does not preclude motion in the y-direction; the two are orthogonal and can occur simultaneously.

The Net Force on an Object Is in the Positive