Which statement best defines work? work is the time it takes to move an object once acted upon by a force. work occurs when balanced forces act on an object and cause movement in the direction of these forces. work occurs when a force causes motion of an object, and this motion is in the same direction of the applied force. work is the distance over time that an object moves once acted on by a force.

How do water’s relative densities as a solid and a liquid differ from that of most other substances? water’s solid and liquid forms have different densities, while most other substances have solid and liquid forms with similar densities. water’s solid and liquid forms have similar densities, while most other substances have solid and liquid forms with different densities. water’s liquid form is less dense than its solid form, while the opposite is true of most other substances. water’s solid form is less dense than its liquid form, while the opposite is true of most other substances.