Question

forces that change motion quick check
suppose a man is sitting on a chair and exerting 100 n of force downward, while a spring beneath the chair exerts 150 n of force upward. if you assign a negative value to the downward force, what is the net force of this system? (1 point)
50 kg
-50 n
50 n
250 n

Explanation:

Step1: Determine the values of forces

Downward force \( F_{down}=- 100\ N\), upward force \( F_{up}=150\ N\).

Step2: Calculate the net force

Net force \( F_{net}=F_{up}+F_{down}\). Substitute the values: \( F_{net}=150+( - 100)\).

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Answer:

C. \(50\ N\)