Question: When a diver leaps from a springboard, their motion does not occur in a straight line but instead follows a curved trajectory. This motion results
When a diver leaps from a springboard, their motion does not occur in a straight line but instead follows a curved trajectory. This motion results from the interaction of multiple forces acting on the diver. As the diver presses downward on the springboard, the board flexes and then pushes back with an equal and opposite force, launching the diver upward and slightly forward. Once airborne, gravity immediately begins to pull the diver back down toward the Earth, shaping their path into a parabola. Air resistance also acts on the diver, opposing their forward motion, although this effect is generally small compared to the influence of gravity (OpenStax, 2022). The diver's final motion is therefore a combination of the upward/forward force from the board and the constant downward force of gravity, producing a non-linear path. This scenario clearly demonstrates Newton's Third Law of Motion, which states that every action force is paired with an equal and opposite reaction force (OpenStax, 2022). The diver's downward push on the springboard represents the action force, while the upward and outward push from the board represents the reaction force. Even though these forces are equal in magnitude, their effects are different because they act on different objects. The diver, being less massive and not fixed in place, accelerates upward and forward, while the board, which is more massive and anchored, only bends slightly before returning to rest. This unequal response highlights the
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