Question

c

Answer 1

I think it's a but I really have no clue.

Answer 2

A

Answer 3

contact forces - friction, air resistance

Answer 4

yeah which one ?

Answer 5

I think it's d, but again, not sure!

Answer 6

'd' sounds reasonable but you must know for the object to be in motion, frictional force is unbalanced and when it comes to rest it becomes balanced and also if the book is on a slope, the normal force wont equal gravitational force

Answer 7

So that sounds like d is not the correct answer? lol

Answer 8

i would go for c yes :)

Answer 9

Thank you so very much for the help!

Answer 10

i'm not 100% sure, it depends on your question but based on the information you have on there, i think its C