Two students spotted some white, eyeless crayfish in the darkness.
1 answer:
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We must write down laws of conservation of momenta and energy.
For the law of conservation of momenta will we will use two axes. One will be x-axis that will correspond to the east, and the other one will be y-axis corresponding to the north. Jack will be marked as 1 and Jill will be marked as 2.
Law of conservation of energy:
This will give us Jill's velocity after the colision.
Law of conservation of momenta:
We will use the second equation to get the angle at which the Jill is traveling:
When we plug all the number we get:
Please note that this is the angle below the x-axis.
For the law of conservation of momenta will we will use two axes. One will be x-axis that will correspond to the east, and the other one will be y-axis corresponding to the north. Jack will be marked as 1 and Jill will be marked as 2.
Law of conservation of energy:
This will give us Jill's velocity after the colision.
Law of conservation of momenta:
We will use the second equation to get the angle at which the Jill is traveling:
When we plug all the number we get:
Please note that this is the angle below the x-axis.
Answer:
v = 0.5 [m/s]
Explanation:
In order to determine the speed in such a time interval, we must calculate the slope between the last two positions.
The slope of a line is determined by the following mathematical expression.
P₂ = point 2 = (12,12) = (x₂,y₂)
P₁ = Point 1 = (6,9) = (x₁,y₁)
In this specific case, we must see that in the x-axis we have time, and on the y-axis, we have the space axis.
Now using the slope:
This slope is equal to the speed (velocity)
v = 0.5 [m/s]