Question

which equation should be used to calculate the weight of an object on earth? a ( f = m - 9.8 , \text{m/s}^2 ) b ( f = \frac{m}{9.8} , \text{m/s}^2 ) c ( f = m + 9.8 , \text{m/s}^2 ) d ( f = m \times 9.8 , \text{m/s}^2 )

Explanation:

Step1: Recall Newton's second law

Newton's second law is \(F = ma\).

Step2: Identify the acceleration due to gravity on Earth

On Earth, the acceleration due to gravity \(a = g=9.8\ m/s^{2}\).

Step3: Substitute \(a = g\) into \(F = ma\)

When calculating weight (a force), we substitute \(a\) with \(g\), so \(F = m\times9.8\ m/s^{2}\).

Answer:

d