The girl skates down the slope with an initial speed of 4 m / s. Determine the speed at the foot of the slope if the resultant
| March 5, 2021 | education
The girl skates down the slope with an initial speed of 4 m / s. Determine the speed at the foot of the slope if the resultant of all the forces that act on the girl is 20 N. girl’s weight 25 kg slope length 10 m.
The resultant forces in this case are directed downward along the slope and impart acceleration to the girl in the same direction. We find the acceleration from Newton’s 2 laws. Using one of the well-known kinematic formulas, we express the final speed and calculate it. See the figure for a detailed solution.
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