Question

which of these are appropriate features for an investigation of the effect of an applied force on the motion of an object? a smooth surface application of a horizontal force application of a vertical force a cart with wheels that turn easily

Explanation:

• A smooth surface reduces friction, allowing the applied force to have a more direct effect on the object's motion.
• Application of a horizontal force is relevant as it can directly cause or change the horizontal motion of the object.
• A cart with wheels that turn easily also reduces friction, similar to a smooth surface, enabling a clearer observation of the effect of the applied force on motion.
• Application of a vertical force is not appropriate for investigating the effect on motion (assuming the motion we are interested in is horizontal, as vertical force would mainly affect the normal force and not the translational motion in the horizontal direction we likely want to study for this investigation).

Answer:

a smooth surface, application of a horizontal force, a cart with wheels that turn easily.