8 10 points
Conservation of Angular Momentum
Angular momentum = MVR = constant; As R decreases, V must
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i just did this and got a 100.

it is a negative acceleration

98.4 m

explanation:

let s = distance up the plane  

then by conservation of energy  

1/2m(18.3)^2 = mg s sin(10)  

(18.3)^2 = 2g s sin(10)  

s = (18.3)^2/2gsin(10)  

= 98.39564526  

= 98.4 m