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Evgen [1.6K]
2 years ago
13

1. Describe what conversation of momentum means.

Physics
2 answers:
MakcuM [25]2 years ago
7 0

Explanation:

<em>1</em><em>.</em><em> </em><em>Conservation</em><em> </em><em>of</em><em> </em><em>momentum</em><em>,</em><em> </em><em>general awareness</em><em> </em><em>of</em><em> </em><em>physics</em><em> </em><em>according</em><em> </em><em>to</em><em> </em><em>which</em><em> </em><em>the</em><em> </em><em>quantity</em><em> </em><em>called</em><em> </em><em>momentum</em><em> </em><em>that</em><em> </em><em>characteri</em><em>z</em><em>es</em><em> </em><em>motion</em><em> </em><em>never</em><em> </em><em>changes</em><em> </em><em>in</em><em> </em><em>an</em><em> </em><em>isolated</em><em> </em><em>collection</em><em> </em><em>of</em><em> </em><em>objects</em><em>.</em><em> </em>

Snowcat [4.5K]2 years ago
3 0

Answer:

1. The conversation of momentum is when a person or object has momentum and transfers it to another person or object.

Explanation:

2. Like if someone is on a swing and kicks someone in front of him. He stops and the kid in front of him falls over because the momentum was transferred.

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A planet's mass and size determines how strong its gravitational pull is.

Models can help us experiment with the motions of objects in space, which are determined by the gravitational pull between them.

Explanation:

5 0
3 years ago
the engine of a car of amass of 2000 kg produced a force of 15000N find the acceleration of the car​
weqwewe [10]
I believe the answer would be 7.5 m/s^2
3 0
3 years ago
An object with kinetic energy k explodes into two pieces, each of which moves with twice the speed of the original object.
zlopas [31]
<span>Assuming that the momenta of the two pieces are equal: when they have equal velocities, then the masses of the two pieces are also equal. Since there is no force from outside of the system, the center of mass moves on with the same velocity as before the equation. So the two pieces must fly at the side side of the mass center, i.e., they must always be at 90° to the side of the mass center. Otherwise it would not be the mass center, respectively the pieces would not have equal velocities. This is only possible, when the angle of their velocity with the initial direction is 60°. Because, cos (60°) = 1/2 = v/(2v).</span>
6 0
3 years ago
If a marble is released from a height of 10 meters how long would it take to hit the ground?
zlopas [31]
S = ut + 0.5at^2 

<span>10 = 0 + 0.5(9.81)t^2 {and if g = 10 then t^2 = 2 so t ~1.414}  </span>

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3 0
3 years ago
if vector u has lenght 70 and direction 40 degrees, and vector v has length 85 and direction 335 degrees what is the length and
Anastaziya [24]

Answer:

Magnitude of resultant = 131.15

Direction of resultant = 3.97°

Explanation:

||u|| = 70

θ = 40°

\vec{u}_x=||u||cos\theta \\\Rightarrow \vec{u}_x=70cos40=53.62

\vec{u}_y=||u||sin\theta \\\Rightarrow \vec{u}_y=70sin40=44.99

||v|| = 85

θ = 335°

\vec{v}_x=||v||cos\theta \\\Rightarrow \vec{v}_x=85cos335=77.03

\vec{v}_y=||v||sin\theta \\\Rightarrow \vec{v}_y=85sin335=-35.92

Resultant

R=\sqrt{R_x^2+R_y^2}\\\Rightarrow R=\sqrt{(\vec{u}_x+\vec{v}_x)^2+(\vec{u}_y+\vec{v}_y)^2}\\\Rightarrow R =\sqrt{(70cos40+85cos335)^2+(70sin40+85sin335)^2}\\\Rightarrow R =131.15

\theta=tan^{-1}\frac{R_y}{R_x}\\\Rightarrow \theta=tan^{-1}\frac{70sin40+85sin335}{70cos40+85cos335}\\\Rightarrow \theta=tan^{-1}0.069=3.97^{\circ}

Magnitude of resultant = 131.15

Direction of resultant = 3.97°

4 0
3 years ago
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