3 years ago

Pourquoi doit on toujours préciser le référentiel dans le quel est étudié le mouvement d'un système?

Physics

1 answer:

Vedmedyk [2.9K]3 years ago

4 0

Answer:

The movement of an object depends on the reference frame, so it is important to predicate it.

Explanation:

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marshall27 [118]

Answer: The answer is A, B, D, and E

Explanation: Choose all those answers. USATestPrep says so.

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3 years ago

A 20 kg bike accelerates at 10 m/s2. what was the force?

Scorpion4ik [409]

Answer:

The answer is 200N.

Explanation:

Force=MA

m=mass

a=acceleration

Let's plug in our numbers into the equation:

20x10 = 200

Since force is measured in newtons, the answer is 200 newtons. (N)

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4 years ago

What problems can you imagine arising from a nation of mixed nationalities and faiths? Provide real world examples, if you can.

JulsSmile [24]

Many different problem such as racial slurring and racial profiling

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3 years ago

A rock tied to the end of a string moves in a circle at a constant speed of 2.5 m/s and experiences an acceleration of 4.0 m/s.

artcher [175]

The radius of the circular motion at the given speed is 1.56 m.

The given parameters;

speed of the rock, v = 2.5 m/s
acceleration of the rock, a = 4 m/s²

The radius of the circular motion is calculated by using centripetal acceleration formula as follows;

$a_c = \frac{v^2}{r} \\\\r = \frac{v^2}{a_c} \\\\r = \frac{2.5^2}{4} \\\\r = 1.56 \ m$

Thus, the radius of the circular motion at the given speed is 1.56 m.

Learn more about centripetal acceleration here: brainly.com/question/79801

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2 years ago

A (light) pallet has a load of cases of tomato paste each of which is a cube of length L and has identical mass. Find the center

Dafna1 [17]

Answer:

From left = 1.2L

From back = 0.9L

Explanation:

5 x = 3(L-X) + 2(2L-X)

X = 0.7L

Distance from left = 1.2L

7y = 2(L-X)+1(2L-x)

Y = 0.4L

Distance from back = 0.9L

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3 years ago