Question

1. a physics teacher has a mass of 180 lbs. what is her weight in newtons? use 1 lbs ≈ 4.448 n.

Explanation:

Step1: Set up the conversion formula

We know that \(1\ \text{lbs}\approx4.448\ \text{N}\). To find the weight \(W\) in Newtons for a mass of \(m = 180\ \text{lbs}\), we use the formula \(W=m\times4.448\).

Step2: Substitute the value of \(m\)

Substitute \(m = 180\) into the formula: \(W=180\times4.448\).

Step3: Calculate the result

\(180\times4.448=(100 + 80)\times4.448=100\times4.448+80\times4.448=444.8+355.84 = 800.64\).

Answer:

\(800.64\ \text{N}\)