Assignment Active
Interpreting a Position vs. Time Graph
Position vs Time
12
10
Using the graph, describe what is happening between
4 and 6 seconds.
The object is moving away from the origin at a
constant velocity
The object is not moving.
The object is moving toward the origin at a constant
velocity
The object is changing velocity
8
Position (m)
2.
0
2
10
12
4 6 8
Time (s)

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j

There are no answer choices, so an example would be: it takes a long time and a lot of precision to sew a shirt by hand, so a machine was created to do the job instead.

C) the periods  of day and night would be fixed all year for anyone at the  equator

I’m not sure about this question