Which term best describes the forces of an object with a net force of zero?

What are the three ways that an object can accelerate

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical