You pull a 20 kg wagon at constant speed on a horizontal floor by exerting a 40 N force on the handle, which make an angle with the horizontal. The force of friction on the
wagon is 30 N.

answer: 0.20

explanation: this can only be the answew because all the other measuremnets are not close

the answer is kevlar

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.)

answera compound;