8.2 forces between objects

Question 1

what are contact forces

Answer 1

when two objects must touch each other to interact

Question 2

examples of contact forces

Answer 2

friction, air resistance, tension, normal contact forces

Question 3

examples of non-contact forces

Answer 3

magnetic force, electrostatic force, gravity

Question 4

what is newton’s first law of motion

Answer 4

a body that stays in motion remains in motion or a body that stays at rest remains at rest unless acted on by another force

Question 5

what is newton’s second law of motion

Answer 5

force = mass x acceleration

Question 6

what is newton’s third law of motion

Answer 6

for every action, there is an equal and opposite reaction

Question 7

what is the driving force also called

Answer 7

engine force or motive force