Final answer:
A bloodstain formed by a drop falling directly downward onto a flat surface would likely be circular or elliptical. The magnitude of velocity versus time for a falling skydiver graphs as an increasing curve that flattens at terminal velocity, while the magnitude of displacement versus time starts at zero and increases exponentially before becoming linear at terminal velocity.
Step-by-step explanation:
If blood drips directly downward at a 90 degree angle onto a flat surface, the resultant bloodstain will generally be approximately circular or elliptical in shape, if we ignore other factors that might affect the blood drop's path, such as wind or surface texture. This is because the force of gravity acts directly downwards, and any variation in the shape would likely be due to external influences rather than the nature of the blood drop's fall.
Part B: The shape of the graph of the magnitude of the velocity versus time for a falling skydiver would start with a steep slope upward as the skydiver accelerates due to gravity, then begin to level off as air resistance increases and the skydiver approaches terminal velocity, resulting in a graph that resembles an inverted parabola that plateaus.
Part C: The graph of the magnitude of the displacement versus time for a falling skydiver would be represented by a curve that starts at zero and then exponentially increases as time progresses, reflecting the accumulation of distance as the skydiver falls, eventually becoming a linear graph once the skydiver has reached terminal velocity and is falling at a constant speed.