2. A 20.0-kg box initially at rest is released from the top of an incline that...

 

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2. A 20.0-kg box initially at rest is released from the top of an incline that is 10.0 m long and makes an angle of 45° to the horizontal. A 20.0-N friction force impedes the motion of the box. Determine its (a) acceleration as it reaches the bottom of the incline. (b) speed as it reaches the bottom of the incline (c) speed as it reaches the bottom of the incline if the incline is frictionless. Explain the difference in your finding as compared to your answer in 2(b) above. 2. A 20.0-kg box initially at rest is released from the top of an incline that is 10.0 m long and makes an angle of 45° to the horizontal. A 20.0-N friction force impedes the motion of the box. Determine its (a) acceleration as it reaches the bottom of the incline. (b) speed as it reaches the bottom of the incline (c) speed as it reaches the bottom of the incline if the incline is frictionless. Explain the difference in your finding as compared to your answer in 2(b) above.