Javier made a list about balanced and unbalanced forces.

Question

Balanced Forces: can cause an object to speed up, slow down, or change directions
Unbalanced Forces: cause objects to stay in the same place or to continue moving at the same speed

Javier made a mistake on his list. Which best describes the mistake Javier made?
A.
Javier forgot to add that forces can never change.

B.
Balanced forces only cause objects to change directions.

C.
Unbalanced forces only cause objects to stay in the same place.

D.
Javier switched the descriptions for unbalanced and balanced forces.

Answer 1

The best description of the mistake Javier made is:

D. Javier switched the descriptions for unbalanced and balanced forces.

Balanced forces do not change an object's motion, which means they can keep it at rest or moving at a constant speed. Unbalanced forces, on the other hand, can cause an object to accelerate, change direction, or alter its speed.