Imagine two people standing at placemark A and placemark E, looking at each other across the fault. Which of the following state
ments correctly describes the relative motion of the land opposite each observer?
a. To both observers, the land opposite them is moving to the right.
b. To both observers, the land opposite them is moving to the left.
c. To the observer at placemark A, the land at placemark Eis moving to the left
d. To the observer at placemark E, the land at placemark A is moving to the right.
a. To both observers, the land opposite them is moving to the right.
b. To both observers, the land opposite them is moving to the left.
c. To the observer at placemark A, the land at placemark Eis moving to the left
d. To the observer at placemark E, the land at placemark A is moving to the right.
1 answer:
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Answer:
Ea = 112500[J]
Eb = 87500[J]
Explanation:
To solve this problem we must use the principle of energy conservation which tells us that the energy of a body plus the work done or applied by the body equals the final energy of a body.
This can be easily visualized by the following equation:
Now we must define the energies at points A & B.
<u>For point A</u>
At point A we only have kinetic energy since it moves at 15 [m/s]
So the kinetic energy
The final kinetic energy can be calculated as follows:
Answer:
3.8 m/s
Explanation:
Momentum is the product of mass and velocity hence
Momentum=mv where m is mass and v is the velocity of an object
Making v the subject of the formula then
Substituting 1710 kgm/s for momentum and 450 Kg for mass we obtain
Hence the speed of dogsled team is 3.8 m/s