Question

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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
□ a cart with wheels that turn easily
□ application of a vertical force
□ application of a horizontal force
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Explanation:

• A smooth surface reduces friction, allowing for a clearer demonstration of the effect of applied force on motion.
• A cart with wheels that turn easily (low - friction wheels) also helps in observing the motion due to the applied force without much interference from rotational friction.
• The application of a horizontal force is relevant as it is the force that directly affects the translational motion of the object (in the direction of the force, assuming no other large forces in the perpendicular direction).
• The application of a vertical force is not directly relevant to the investigation of the effect of an applied force on the motion (in the horizontal plane, assuming the motion is considered in a horizontal context). For example, if we are looking at how a force makes an object move horizontally, a vertical force (like lifting force) does not contribute to that horizontal motion (unless there is a component, but in a basic investigation, we assume a simple case).

Answer:

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