If body area or size increases, how does the severity of acceleration on the body change?

If body area or size increases, how does the severity of acceleration on the body change?

• A. Increase
• B. Decrease
• C. No effect
• D. It depends on the direction

Answer: (B)

When body size increases, the body's inertia grows, meaning it resists changes in motion more. For a given external impulse or rapid deceleration, a larger mass results in a smaller acceleration (a = F/m). Additionally, a bigger surface area can distribute the impact over a wider area and may increase stopping time, further reducing peak deceleration. So increasing body size or area tends to lessen the severity of acceleration forces felt by the body.

When body size increases, the body's inertia grows, meaning it resists changes in motion more. For a given external impulse or rapid deceleration, a larger mass results in a smaller acceleration (a = F/m). Additionally, a bigger surface area can distribute the impact over a wider area and may increase stopping time, further reducing peak deceleration. So increasing body size or area tends to lessen the severity of acceleration forces felt by the body.