Its D that so easy look at it
Answer:
Heavier person
Explanation:
Work = force × distance. In this case, force = weight and distance = height of the stairs. For both people, the height of the stairs is the same. Since the heavier person has more weight, they did more work.
I think that B and D are true
not sure about the others
Answer:
Explanation:
Since our equation is and F=781.25 N when t=1.49s, we have:
The impulse of a force is , so for our case we have:
For our case and , so we have: