Question

a rock has a mass of 15 kg, what is the rocks approximate weight?
a 15 n
b 120 n
c 1.5 n
d 147 n

Explanation:

Step1: Recall the formula for weight

Weight \( W = mg\), where \(m\) is mass and \(g\) is acceleration due to gravity (\(g = 9.8\space m/s^{2}\))

Step2: Substitute the values

Given \(m = 15\space kg\) and \(g=9.8\space m/s^{2}\), then \(W=15\times9.8\)

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Answer:

D. 147 N