Questions: Three Different Parts What will be different? The surface area of the pack will increase as we add to an upward force. The pack's sail jumping area will increase in proportion to a larger upward force. The pack's first jump acceleration will be increased.

Solution Steps

• The surface area of the pack will not change as a result of adding an upward force. Surface area is a physical property that depends on the dimensions of the pack, not on the forces applied to it.

• The sail jumping area of the pack will not increase in proportion to a larger upward force. The sail area is a fixed property and does not change with the application of force.

• The pack's first jump acceleration will increase with a larger upward force. According to Newton's second law, \( F = ma \), where \( F \) is the force applied, \( m \) is the mass, and \( a \) is the acceleration. Increasing the upward force \( F \) will result in a higher acceleration \( a \).

Final Answer