EASY 12 POINTS ⚠️⚠️ I. Alternate freezing and thawing
II. Karst topography
III. Plant roots
IV. Exfoliation
V. Abrasion
Weathering can be either a chemical or a physical process. The action of water causes physical weathering of rock. Which examples of weathering are the result of the action of water?
A) I, II, V
B) I. and II.
C) I, II, III.
D) I, II, IV, V

work: w = fd (given)

work done by chet   =50*1 = 50 j

work done by mika =40*2 = 80 j

work done by sara =30*1.5 = 45 j

work done by bill =60*0.5 = 30 j

students in order from the greatest amount of work done to the least is mika> chet> sara> bill

hence option (b) is correct.

f=ma newton

f=100x2.5=250n

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )