Question

multiple choice question
what pushes perpendicular to the objects surface?
weight
friction
net force
normal force
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Explanation:

To solve this, we analyze each option:

• Weight is the force due to gravity, acting vertically downward, not necessarily perpendicular to the object's surface in all cases.
• Friction acts parallel to the surface, opposing motion or impending motion.
• Net force is the vector sum of all forces acting on an object, not a specific force with a direction perpendicular to the surface.
• Normal force is defined as the force exerted by a surface that is perpendicular to the surface of contact.

Answer:

D. normal force