A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to the right of point A.
-What is the speed of the box just before it reaches point A?
A)98 m/s
B)21 m/s
C)9.9 m/s
D)5.7 m/s
E)4.4 m/s

Question

A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to the right of point A. 
-What is the speed of the box just before it reaches point A?
A)98 m/s 
B)21 m/s 
C)9.9 m/s 
D)5.7 m/s 
E)4.4 m/s

Quizplus · Accepted Answer

The Answer of A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to the right of point A. 
-What is the speed of the box just before it reaches point A?
A)98 m/s 
B)21 m/s 
C)9.9 m/s 
D)5.7 m/s 
E)4.4 m/s

A 90-Kg Box of Oranges Slides from Rest Down a Frictionless