The girl in the picture applies 10 N of force to the snowball to move it 2 meters. How much work has she done?
person-rolling-big-snowball-concept-winter-fun-person-rolling-big-snowball-concept-winter-fu_61ef29cc4e32a.jpg
a
5 J
b
12 J
c
20J
d
100 J
The correct answer is c) 20 J.
Work (W) is calculated as the product of force (F) applied on an object and the distance (d) over which the force is applied:
W = F x d
Here, the force applied is 10 N and the distance moved is 2 meters. Therefore, the work done is:
W = 10 N x 2 m = 20 J
So, she has done 20 joules of work in moving the snowball over 2 meters.