Question

4 multiple choice 5 points
the cartoon below shows a humorous view of a law of motion.
which statement best summarizes the scientific concept shown in the cartoon?
a falling body accelerates at a constant speed.
the motion of an object is constantly changing due to magnetic forces.
the force of friction causes an object in motion to move faster.
a body in motion will remain in motion unless influenced by an outside force.

Explanation:

• Option A: A falling body accelerates (its speed changes), it does not accelerate at a constant speed. Acceleration means a change in velocity (speed or direction).
• Option B: There is no indication of magnetic forces in the cartoon. The skater's motion is related to inertia (a property of matter, not magnetism).
• Option C: Friction opposes motion. It would cause an object in motion to slow down, not move faster.
• Option D: The skater is in motion (first panel - can't stop) and remains in motion until an outside force (the "STOP" sign) acts on them (second panel). This is in line with Newton's first law of motion (inertia: a body in motion will remain in motion unless influenced by an outside force).

Answer:

D. A body in motion will remain in motion unless influenced by an outside force.