- #1
Ereny
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physics help please...
a person with a mas of 75.0 kg is wearing roller blades and stands at rest on top of a long hill. the hill makes an angle of 15.0 above horizontal. assume the coefficient of friction to be .10.
a. determine the acceleration of a the person as they roll down the hill.. for this one i got around 1.55 m/s^2.. but my other friend got a different answer soo i am wandering if anyone could help me..
b. assuming the hill to be 300. meters long, that the person starts from rest, and that the acceleration remains constant the entire length of the hill, determine the person's speed at the bottom of the hill.
for b .. are we suppose to solve for distance or just use 300 in a kinematic equation?
a person with a mas of 75.0 kg is wearing roller blades and stands at rest on top of a long hill. the hill makes an angle of 15.0 above horizontal. assume the coefficient of friction to be .10.
a. determine the acceleration of a the person as they roll down the hill.. for this one i got around 1.55 m/s^2.. but my other friend got a different answer soo i am wandering if anyone could help me..
b. assuming the hill to be 300. meters long, that the person starts from rest, and that the acceleration remains constant the entire length of the hill, determine the person's speed at the bottom of the hill.
for b .. are we suppose to solve for distance or just use 300 in a kinematic equation?