Question

barry has a mass of 65 kilograms and is doing pull - ups. which statement describes how newtons first law of motion is involved in this interaction? the pull - up bar pulls up on barry with the same force that barry pulls down on the pull - up bar. barry has to use more force to do a pull - up if he wears a 20 - kilogram weight belt than if he is pulling only his body weight. barry will remain at rest until he pulls down on the pull - up bar.

Explanation:

Newton's first law states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. In the context of Barry doing pull - ups, he remains at rest until he applies a force to pull down on the bar, which initiates his upward motion. The first option describes Newton's third law (action - reaction), and the second option describes Newton's second law (force and mass relationship).

Answer:

Barry will remain at rest until he pulls down on the pull - up bar.