What is the resulting acceleration of Mandy gliding on waxed skis on snow?

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Mandy, with a mass of 65 kg, is gliding on waxed skis with an initial velocity of 1.5 m/s on level snow. The frictional force acting on her, calculated to be 407.68 N, is the net force causing her to decelerate. Using Newton's second law, the resulting acceleration can be determined from this frictional force. After calculating the acceleration, one can apply kinematic equations to find the distance she glides before coming to a stop. The discussion emphasizes the importance of understanding friction and acceleration in motion analysis.
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Mandy has a mass of 65 kg is gliding to a stop at an initial velocity of 1.5 m/s on her waxed skis on level snow. How far will she glide till she stops. Hint: You will have to calculate the frictional force which is causing her to slow and then calculate the resulting acceleration.
(u for waxed skis on snow= 0.64)

So far i calculated her frictional force (407.68)
 
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The frictional force which you correctly calculated is the net force acting on her in the horizontal direction, so, per the hint, what would be the resulting acceleration using Newton 2? Once you determine the acceleration, you can use one of the kinematic motion equations to solve for the distance traveled before she comes to a stop (at which point her velocity is 0).
 

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