If I get this wrong please don't judge:
C. Different parts of the sun rotate at different rates.
The sun isn't a solid, its a big ball of gas.
Let her initial velocity be U.
Let the width of the river be W.
She swims 3/5 the width of the river at U.
Remainder width = (1 - 3/5) = 2/5.
She then swims 2/5 the width with velocity U/2.
Average Speed = (Total Distance Traveled) / ( Total Time Taken).
Distance = Speed * time
time = Distance / Speed.
Time in first trip: = (3/5)W / U = 0.6W/U.
Time in second trip = (2/5)W / (U/2) = 0.4W / 0.5 U = 0.8W/U
Total Distance Traveled = W, width of the river.
Average Speed = W / (0.6W/U + 0.8W/U) = W / (1.4W/U)
= W * U / 1.4W
= U/1.4
= U * 10 / 14
= (5/7) U.
Therefore Average speed is (5/7) of the initial speed.
Acceleration is defined as the change in velocity divided by the change in time. Since the velocity changed from 50 m/s to 40 m/s (-10 m/s change) in 2 seconds, then the acceleration is (-10/2) = -5 m/s^2 northward. Hope this helps!
The act of Adjusting your speed to address one hazard at a time when faced with multiple risks is: (c) Separating
Meaning of separating Hazards
A hazard can be defined primarily as an occurrence that can lead to damage of properties and destruction of live.
separating Hazards can be defined as an act of adjusting one's speed in other to attend to one hazard before another.
In conclusion, The act of Adjusting your speed to address one hazard at a time when faced with multiple risks is: (c) Separating
Learn more about Hazards: brainly.com/question/14367881
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