Physics, 18.04.2020 00:41, Shom2095

A wooden board hangs from a spring scale which measures 100 N when there is no wind. The board is oriented parallel with the ground below. The board has area = 2 m2 and has negligible thickness. When the air above the board moves at 4.9 m/s and the air below the board is stationary, the spring scale now read as:
a. 65N
b. 69N
c. 73N
d. 77N
e. 81N

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A wooden board hangs from a spring scale which measures 100 N when there is no wind. The board is or...