Neptune (currently the most distant planet from the Sun!) lies about 4.5x109 kilometers from the Earth. If you were traveling to
1 answer:
Answer:
5,137 years.
Explanation:
we have a distance and the velocity, so we calculate the time:
the distance is the distance between earth and neptune:
and the velocity is the typical highway speed:
we divide this quantities:
it would take this many hours to get to Neptune at this speed.
Let's convert this to years:
there are 8760 hours in one year:
so the time in years is:
it would take about 5,137 years.
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<h2>Answer: Toward the center of the circle.</h2>
This situation is characteristic of the uniform circular motion , in which the movement of a body describes a circumference of a given radius with constant speed.
However, in this movement the velocity has a constant magnitude, but its direction varies continuously.
Let's say is the velocity vector, whose direction is perpendicular to the radius
of the trajectory, therefore
the acceleration
is directed toward the center of the circumference.
Answer:
0.53 m
Explanation:
First of all, we have to consider the vertical motion of the ball, in order to find the time it takes for the marble to reach the ground. The initial height is , the initial vertical velocity is zero, while the acceleration is
, so the vertical position at time t is given by
By demanding y(t)=0, we find the time t at which the ball reaches the ground:
Now we can find the horizontal range of the marble: we know the initial horizontal speed (v=1.24 m/s), we know the total time of the motion (t=0.43 s), and since the horizontal speed is constant, the total distance traveled on the horizontal direction is