Question

jayden has a mass of 65 kilograms and is doing pull - ups. match each of newtons laws of motion to the statement it best describes. newtons first law of motion newtons second law of motion newtons third law of motion jayden 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. the pull - up bar pulls up on jayden with the same force that jayden pulls down on the pull - up bar. jayden will remain at rest until he pulls down on the pull - up bar.

Explanation:

Newton's first law (law of inertia) states 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. Jayden remaining at rest until he pulls down on the bar is an example of this. Newton's second law is $F = ma$ (force equals mass times acceleration). Jayden needing more force with added mass is an example of this. Newton's third law states for every action, there is an equal and opposite reaction. The bar pulling on Jayden with the same force he pulls on the bar is an example of this.

Answer:

Jayden 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: Newton's second law of motion
The pull - up bar pulls up on Jayden with the same force that Jayden pulls down on the pull - up bar: Newton's third law of motion
Jayden will remain at rest until he pulls down on the pull - up bar: Newton's first law of motion