A mountaineer whose mass is 10 kg leaps from a tall cliff in Nevada, USA. This said mountaineer has felt an eastward force of 300 N, and as he fell, an upward force of 700 N due to the wind. The question is what is the magnitude of the net force experienced by this mountaineer?A. 300 N, B. 280 N, C. 673 N, D. 410 N

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