A stone of a mass 75.0 g is dropped from the top of a 10 storey building with a height of 32.1 m. caculate the time elapsed from the instant the stone is dropped until it strikes the sidewalk.

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.

what was the answer?

he made 11 calls in one day

radiation

explanation:

heat is transmitted by radiation