(b) The graph shows the vertical velocity of the skydiver during the first 40 s of the fall. His parachute is not open during this time.
Vertical
velocity
0
0
10
30
40
20
Time in s
Explain the shape of the graph.
(4)

Explain why electric current cannot exist if a current doesn't have a voltage source.

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation