Question

PLEASE HELP!!! A.S.A.P.!!!!! WILL BE MARKED TO BE AS BRAINLEST!!! 30 POINTS!!!!!

Answer 1

Answer: B)Number 1, 3 and 5 all demonstrate non-contact forces because the magnets or electrically charged objects exert forces on each other without touching.

Explanation:

Forces which act only when the two surfaces are in contact are known as contact forces. For example: frictional force is a contact force because it acts only when the two surfaces have tendency to move or are in relative motion.

Forces which act without any contact between surfaces are non-contact forces. For example: magnetic force, gravitational force, electrical force.

Because Kennedy and Lilly have to prove that some forces are non-contact forces, they must put up examples which actually show force being exerted between two objects without they being in contact. Thus, number 1, 3 and 5 demonstrate this.

Answer 2

Answer:

B)Number 1, 3 and 5 all demonstrate non-contact forces because the magnets or electrically charged objects exert forces on each other without touching.

Explanation:

Forces which act only when the two surfaces are in contact are known as contact forces. For example: frictional force is a contact force because it acts only when the two surfaces have tendency to move or are in relative motion.

Forces which act without any contact between surfaces are non-contact forces. For example: magnetic force, gravitational force, electrical force.

Because Kennedy and Lilly have to prove that some forces are non-contact forces, they must put up examples which actually show force being exerted between two objects without they being in contact. Thus, number 1, 3 and 5 demonstrate this.

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Explanation: