Aperson carries a mass of 10 kg and walks along the +x-axis for a distance of 100m with a constant velocity of 2 m/s. what is the work done by this person? a) 20 j b) none of the other choices is correct. c) 0 j d) 200 j

Work done, W = 0

Explanation:

It is given that,

Mass of the object, m = 10 kg

Distance covered by the person, d = 100 m

Speed of the person, v = 2 m/s

We need to find the work done by this person. We know that the product of force and distance is equal to the work done by the person. Mathematically,

Since, the acceleration is equal to the rate of change of velocity. Here, the person is moving the mass with a constant velocity. So, there is no change in velocity, a = 0

As a result, the work done by the person is 0 J. So, the correct option is (c). Hence, this is the required solution.      

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers