Question

A hot air balloon is acted on by two forces. One force is its weight, equal to

2448 newtons. The second force is a buoyant force acting straight up,

equal to 2448 newtons. What change in the motion of the balloon will

result from the action of these two forces?

no change

rising

falling

Answer 1

Answer:

no change

Explanation:

The Newton's Second Law of motion states that when an unbalanced force is applied to an object, it causes an accelerated motion in the object, in the direction of the unbalanced force. So, if there is no unbalanced force, then there is no motion. In this case both the forces have same magnitude and opposite direction. Therefore, the unbalanced force will be zero:

Unbalanced Force = Upthrust - Weight

Unbalanced Force = 2448 N - 2448 N

Unbalanced Force = 0 N

hence, there will be no motion in the vertical direction. Therefore, the correct option is:

no change