Final answer:
The statement that 'tumble' can mean to fall or roll is True. Tumbling refers to an uncontrolled movement and is relevant in physics, such as the movement of bacteria or the rolling motion of objects.
Step-by-step explanation:
True or False: "Tumble" can mean to fall or roll. The statement is True. 'Tumble' can refer to a type of movement where an object falls or rolls in an uncontrolled or haphazard manner. In physics, this concept is applied to various systems, including bacteria that alter their direction by switching the rotation of their flagella from counterclockwise (leading to a run) to clockwise (resulting in a tumble). The tumbling motion can cause a random, circuitous movement which is crucial for the bacteria's directional movement.
In a similar context, if a marble rolls down a slope from a height h₁ and up another slope to a height h₂ where h₂ < h₁, the potential energy difference mg(h₁ - h₂) is equal to the work done against friction. This is often converted into heat due to friction. Rolling motion combines rotational and translational motion and understanding this complex movement is essential in various fields of physics and engineering.