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miajustina123
25.09.2021 •
Physics
33. A 45N boy rides a skateboard down the sidewalk with a constant velocity. He applies a steady force of 8 N to maintain his speed. Draw a free body diagram to illustrate all forces acting on the boy. A) What is the frictional force he experiences? B) What is his acceleration? C) What is the normal force?
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Ответ:
See answers below
Explanation:
A) The frictional force is 8 N in the opposite direction of the applied force (8 N).
B) The acceleration is zero because the boy is skateboarding at a constant velocity.
C) The normal force is 45 N in the opposite direction of the gravitational force (45 N).
For the free body diagram, draw a boy/dot with an upward arrow of 45 N, a downward arrow of 45 N, a right arrow of 8 N, and a left arrow of 8 N.
Ответ: