THAT LINK IS A VIRUS NEVER GO TO A LINK and if you go to “goggle” you should see a camera icon and take a picture of the question and get the answer there
Motion must be defined relative to something.
Here's an obvious, everyday example:
-- You're in a passenger jet, going to visit grandma on the
coast for the holidays.
-- You're sitting still in your seat, listening to some 'mp3's,
reading a book, and dozing off.
-- At the same time, people on the ground see you flying over
at almost 500 miles per hour.
Are you moving at 500 mph, or are you not moving at all ?
The answer is 'Yes. Both.'. It just depends on who's measuring your speed.
There's no such thing as your "real" speed. Motion is always
relative to something. Different reference = different speed.
Answer:
20 m/s is the answer i think
Answer:
Explanation:
The resistance of a piece of wire is given by
where
is the resistivity of the material
L is the length of the wire
A is the cross-sectional area
In this problem, we have
L = 7.0 m
The diameter of the wire is 0.14 cm, so the radius is 0.07 cm, therefore the cross sectional area is
Therefore, the resistance is
Any time that the sign (+ or -) of the acceleration<span> is the same as the sign of the </span>velocity<span>, the object will speed up. If the signs are opposite, the object will slow down. </span>Acceleration<span> is a vector quantity. When either </span>velocity<span> or direction changes, there is </span>acceleration<span> (or deceleration).</span>