Question

which could be an example of a balanced force? a box of dishes falling from a counter an asteroid moving at a constant speed through space a rocket taking off a car accelerating from a stop sign

Explanation:

Balanced forces occur when two forces acting on an object are equal in size but opposite in direction, resulting in no change in the object's motion (i.e., the object remains at rest or moves at a constant velocity).

• A box of dishes falling from a counter: There is an unbalanced force (gravity pulling it down with no equal upward force to counteract it immediately as it falls), so it's accelerating downward.
• An asteroid moving at a constant speed through space: If it's moving at a constant speed (and assuming no change in direction, which is a simplification as in reality space has gravitational influences etc., but in basic physics problems with the given context), the net force on it is zero (balanced forces, as per Newton's first law \(F = ma\), if \(a=0\), \(F = 0\)).
• A rocket taking off: The thrust force is greater than the gravitational and air - resistance forces (initially unbalanced to cause upward acceleration).
• A car accelerating from a stop sign: There is an unbalanced force (the force from the engine making it accelerate, \(F=ma\) where \(a> 0\)).

Answer:

An asteroid moving at a constant speed through space.