A sliding frictionless puck begins from rest at the top of an incline. After traveling down the incline, the puck is moving at 10 m/s. what was the initiao height of the puck? (Assume g=10 m/s2)​

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 is the question because that is not a question.

a) electrical > light, sound, and thermal< < < <

) the mechanical energy of the firefighter moving.< < < < a) electrical > light, sound, and thermal< < < <

c) both a and b.

0.11 m/s and 0.28 m/s should be correct