3 years ago

A box is at rest on an inclined surface. Which diagram correctly illustrates all forces, including any component forces?

Physics

1 answer:

Brrunno [24]3 years ago

3 0

Answer:

The answer is D.

Explanation:

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A toy rocket moving vertically upward passes by a 2.0-m-high window whose sill is 8.0 m above the ground. The rocket takes 0.15

sveta [45]

Answer:

$v_i = 18.86 m/s$

Explanation:

As we know that the speed of the rocket is v1 and v2 at the bottom and top of the window

then we will have

$d = (\frac{v_1 + v_2}{2}) t$

$2 = (\frac{v_1 + v_2}{2})(0.15)$

$26.67 m/s = v_1 + v_2$

also we know that

$v_2 - v_1 = (-9.81)(t)$

$v_2 - v_1 = (-9.81)(0.15) = -1.47$

now we have

$v_2 = 12.6$

also we have

$v_1 = 14.1 m/s$

now if the sill of the window is at height 8 m from the ground then we have

$v_1^2 - v_i^2 = 2 a h$

$(14.1^2) - v_i^2 = 2(-9.81)(8)$

$v_i = 18.86 m/s$

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3 years ago

Rank the vector combinations on the basis of their magnitude.

melomori [17]

I think this is about the 5th or 6th time I've seen this question
submitted to Brainly. So far, nobody has yet given us any of
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2 years ago

ASAP Is a phone sliding down a binder potential and kinetic energy.

NemiM [27]

Kinetic energy because there is motion (PE converting to KE). Potential energy is the amount of stored energy.

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2 years ago

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The destruction of the ozone layer primarily occurs in the mesosphere. thermosphere. stratosphere. troposphere.

Fofino [41]

I believe the answer would be Troposphere.

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