Question

what is the weight of a boy with a mass of 50 kg on earth? n use g = 9.81 m/s² and do not include units in your answer, round answer to 3 significant figures. enter the answer

Explanation:

Step1: Recall weight - mass formula

Weight \(W = mg\), where \(m\) is mass and \(g\) is gravitational acceleration.

Step2: Substitute given values

Given \(m = 50\) kg and \(g=9.81\) m/s², so \(W=50\times9.81\).

Step3: Calculate the result

\(W = 490.5\).

Step4: Round to 3 significant figures

\(W\approx491\).

Answer:

491