Answer:
The correct option is c: 396.9 meters.
Explanation:
First, we need to find the time at which the car landed:
Now, we can find the height of the top-level:
Since the car has only a velocity in the horizontal direction, we have:
Therefore, the correct option is c: 396.9 meters.
I hope it helps you!
C. The average acceleration is positive and smaller in magnitude than the initial acceleration.
<h3>
What is average velocity?</h3>
Average velocity is defined as the change in position or displacement (∆x) divided by the time intervals (∆t) in which the displacement occurs.
a = Δv/Δt
where;
- Δv is change in velocity
- Δt is change in time
a = (250 - 248) / (70 - 40)
a = 0.067 m/s²
Thus, we can conclude that the average acceleration is positive and smaller in magnitude than the initial acceleration.
Learn more about average acceleration here: brainly.com/question/17587670
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Answer:
A. A line can be drawn from the planet to the sun that sweeps out equal areas in equal times
Explanation:
This is exactly what Kepler's second law of planetary motion states:
"the segment joining the sun with the center of each planet sweeps out equal areas in equal time"
This law basically tells how the speed of a planet orbiting the sun changes during its revolution. In fact, we have that:
- when a planet is closer to the Sun, it will orbit faster
- when a planet is farther from the Sun, it will orbit slower
Answer:
The answer is 4.55 m/s!
Explanation:
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