Answer:
Gravity, downward
Friction, upward, the dam on the sides of the stream
Compression, downward, because they walk across it
Explanation:
Answer:
Explanation:
Here we have an inelastic collision problem. We can use the momentum (p = mv) conservation law in each component of the displacement.
So,
<u>X-component:</u>
(1)
Now,
- v(i1x) is 0, because the first car just moving in y-direction
- v(i2x) is 164 km/h
- v(f1x)=v(f2x), because both cars stick together after the collision, so they have the same x-component velocity.
Then, using this information we can rewrite the equation (1).
<u>Y-component:</u>
(2)
We can do the same but with the next conditions:
- v(i1y) is 239.44 km/h
- v(i2y) is 0, because the second car just moving at the x-direction
- v(f1y)=v(f2y), because both cars stick together after the collision, so they have the same y-component velocity.
Then, using this information we can rewrite the equation (2).
Now, as we have both components of the final velocity, we can find the angle East of North. Using trigonometric functions, we have:
I hope it helps you!
Lowering the temperature will cause a decrease in gas pressure in a closed container. The correct answer is A, lowering the temperature.
Answer:
complete reflection of a ray of light within a medium.
Explanation: