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ICE Princess25 [194]
3 years ago
11

When can a truck have less momentum than a bike? A. only when the truck is not moving B. only when it's moving faster than the b

ike C. only when it's moving more slowly than the bike D. when it's not moving or when it's moving much more slowly than the bike
Physics
1 answer:
3241004551 [841]3 years ago
4 0

Answer:

C

Explanation:

It is the answer I think let me know

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What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 se
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Answer:

Acceleration, a=\dfrac{1}{8}(-i+9j)\ m/s^2

Explanation:

Initial velocity of a particle in vector form, u = (-5i - 2j) m/s

Final velocity of particle in vector form, v = (-6i + 7j) m/s

Time taken, t = 8 seconds

We need to find the magnitude of acceleration vector. The changing of velocity w.r.t time is called acceleration of a particle. It is given by :

a=\dfrac{v-u}{t}

a=\dfrac{(-6i+7j)\ m/s-(-5i-2j)\ m/s}{8\ s}    

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or

a=\dfrac{1}{8}(-i+9j)\ m/s^2

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The Earth's axis of rotation is tilted. Because of this, the amount of sunlight an area on the planet receives each day varies
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Explanation:

Due to this tilt in Earth's axis of rotation, some regions receive different amounts of sunlight according to the seasons of the year. These variations are more evident near the poles and softer or imperceptible near the equator. This explains the fact that while in the northern hemisphere it is summer and there are high temperatures (because the Sunlight incides more perpendicularly in this area during this season), in the southern hemisphere it is winter and very low temperatures are recorded, and vice versa.  

In this sense, according to the image the Earth is at the point of its orbit in which, due to the inclination of its axis, the North Pole is closer to the Sun.  

In other words, the northern hemisphere is tilted toward the Sun, and this astronomical phenomenon brings the summer season for the Northern Hemisphere.

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Which is 20 miles per hour north an example of?
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