Answer:
1) 4 x 25m = 100m
2) 0 because after 4 lengths, he's back at the starting block.
3) speed is distance over time so speed here is 100m/125s = 0.8m/s
4) ...
5) 100m / 1.25m/s = 80s
6.a) 100m / 0.5m/s = 200s
7.b) ... can't draw this now..
Answer:
Places like cities
Explanation:
Cities have more necessities when it comes to technology like live TV, technology companies, electric companies, homes in cities for things like the TV, AC, more luxurious stuff, and I can't even list more because there are so many technological reasons they use, well, technology.
It all comes down to logic and thinking.
At the place where the rope meets the bag, the upward force
of the rope must be exactly the same as the downward force of
the load of nails. If the net force at that point were not zero, then
that point would be accelerating either upward or downward. So
the upward force of the rope at that point is 191 N.
I can't tell you about the tension higher up in the rope. If the rope
itself has any mass, then points higher up must support not only
the bag of nails but also the weight of the section of rope that is
below the point.
If the rope has no mass, then the tension is 191 N everywhere along it.
