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3 years ago

Help me please,

Physics

1 answer:

garik1379 [7]3 years ago

7 0

Option B

Explanation:

no distance was given only the acceleration due to the fact that it went up (10m/s/s)

s0 it is

0 m/s and 10m/s/s (option B)

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What form of matter is "vapor"?

elena55 [62]

Vapor is usually made with water and it would be made with gas.

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4 years ago

A force of 6N is exerted on a cart that is carrying a rock and produces an acceleration of 2 m/s2. If the cart has a mass of 1 k

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If you use the equation F=ma and re-arrange it to get m = F/a, you'll get the total mass. Then you have to subtract the mass of the cart from the total mass to get the mass of the rock.

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3 years ago

A migrating robin flies due north with a speed of 12 m/s relative to the air. The air moves due east with a speed of 6.7 m/s rel

mafiozo [28]

Here it is given that speed of migrating Robin is 12 m/s relative to air

so we can say that

$\vec v_{ra} = 12 m/s$ North

so it will be

Let North direction is along Y axis and East direction is along X axis

$\vec v_{ra} = 12\hat j$

also it is given that speed of air is 6.7 m/s relative to ground

$\vec v_a = 6.7 \hat i$

now as we know by the concept of relative motion

$\vec v_{ab} = \vec v_a - \vec v_b$

$\vec v_{ra} = \vec v_r - \vec v_a$

now by rearranging the terms

$\vec v_r = \vec v_{ra} + \vec v_a$

$\vec v_r = 12 \hat j + 6.7 \hat i$

now we need to find the speed of Robin which means we need to find the magnitude of its velocity which we found above

So here we will say

$v_r = \sqrt{12^2 + 6.7^2}$

$v_r = 13.7 m/s$

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3 years ago

Is it possible for a distance-versus-time graph to be a vertical line? Explain.

yawa3891 [41]

No. If time is the horizontal axis and distance is the vertical axis, then
it is not possible for a distance-vs-time graph to be a vertical line.

A vertical line would mean:

-- the object was at all distances at the same time,

-- it moved from any location to any other location in no time, and

-- it moved with infinite speed.

Even light doesn't do that. A distance-vs-time graph for light is
not a vertical line. It's a slanted line with slope of (3 x 10⁸) m/s.
Purty durn steep, but not vertical.

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4 years ago

Read 2 more answers

You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 6 m at your feet, then a

Zigmanuir [339]

Answer:

4.5 m/s

Explanation:

The rock must barely clear the shelf below, this means that the horizontal distance covered must be

$d_x = 5 m$