Question

4.3 newtons second law of motion

1. an object has a mass of 1 kg on earth. what is its weight on the moon?

a. 1 n
b. 1.67 n
c. 9.8 n
d. 10 n

Explanation:

Step1: Recall weight formula

Weight \( W = mg \), where \( m \) is mass, \( g \) is gravitational acceleration. On Earth, \( g_{Earth}=9.8\ m/s^2 \), on Moon, \( g_{Moon}=\frac{1}{6}g_{Earth}\approx1.67\ m/s^2 \).

Step2: Calculate moon weight

Given \( m = 1\ kg \), \( g_{Moon}\approx1.67\ m/s^2 \). So \( W_{Moon}=m\times g_{Moon}=1\ kg\times1.67\ m/s^2 = 1.67\ N \).

Answer:

b. 1.67 N