Which projectiles will be visibly affected by air resistance when they fall
a)balloon
b)leaf
c)brick
d)rock

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

heats surface water up

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)