Question

any time two objects touch each other, they exert a force on each other. question 2 (1 point) gravity is not a contact force. true false question 3 (1 point) in most of the cases air resistance is taken as zero. true false

Explanation:

• For the first question: When two objects touch, they exert a contact force. Gravity is a non - contact force (acts at a distance), while friction and normal force are contact forces. Velocity is not a force.
• For the second question: Gravity is a non - contact force as it acts between objects without physical contact (e.g., the Earth and the Moon).
• For the third question: In many basic physics problems (especially in introductory mechanics), air resistance is often neglected (taken as zero) to simplify calculations.

Answer:

• Question 2: b. friction
• Question 3: True