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.      

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide