Eli5 If the equation for force is F=ma why does dropping the same object from 2 different heights change how much an object would be crushed?

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In science one year, we did a test of dropping a water bottle from different heights over a Pringle, and we had to protect the Pringle with a paper. But how would increasing the height increase the force is the mass and acceleration is the same?

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Anonymous 0 Comments

Deceleration is a type of acceleration. They’re treated the same in the math.

The deceleration—the change in velocity at the moment the object hits the ground—is what fits into the “a” in that formula, not the acceleration due to gravity.

Acceleration due to gravity is still relevant because the object that fell further experienced that acceleration longer. That means it reached a higher velocity and therefore experienced greater deceleration when the velocity of the object suddenly dropped to zero as it contacted the ground. The force of impact scales with that deceleration.

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