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densk [106]
4 years ago
7

I need help to figure out how to solve this problem and solve it!!!

Physics
2 answers:
wariber [46]4 years ago
4 0

well it looks like the walk at a constant increasing pace then at a constant pace then increaseing pace then constant pace then they slow down then walk at a constant pace then walk at a constantly increasing pace

plz rate me  brainliest

8_murik_8 [283]4 years ago
4 0
This is actually more math than physics.

This is a graph of how far a shopper is from where she started, as time goes on.
Every point on the line is a point in time and space:  The number down below it
   shows how long it was after the beginning, and the number to the left of it shows
   the distance from the starting place.

Look along the bottom.  The graph only covers the first 100 seconds.
Look up along the left side.  The graph can only show distance that are
     30 meters or less from where she started.  If she gets farther away,
      the line will go up off the graph.  

Now, here are some things you're going to see on the graph:

-- When she's walking away from the cart pick-up, her distance from it
is increasing as time goes on.  So the line on the graph is rising.

-- When she's standing still in the store, her distance from the cart pick-up
isn't changing as time goes on.  So the line on the graph is flat.

-- When she's walking TOWARD where she started, her distance from it
is decreasing as time goes on.  So the line on the graph is dropping.

-- The faster she walks, the faster the distance changes, so the line is steeper.

Knowing this, you can look at the graph and see what happened:

-- She started some place when Time was zero.
    I call it picking up the shopping cart.

-- In the first 20 seconds, she walked 15 meters away from the carts.

-- Then she stood still for 10 seconds.

-- Then she walked away from the carts, faster, for another 10 seconds.
    Now she was 25 m from them. 

-- Then she stood still again for 10 seconds.

-- Then she turned around and walked back toward the carts for 10 seconds.
    At that time, she was only 20 m from where she started.

-- She stood still there for 10 seconds.

-- She turned again, and resumed walking away from where she started.
   She walked rather slowly for 30 seconds, and wound up 30m from
         where she started, 100 seconds after she left it.

That's all we know, because that's the end of the graph.

The question wants you to describe this motion.
When you write it up, please don't just copy my words.  Make it your own.
  
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Two forces whose resultant is 100newton are perpendicular to each other. If one of them makes an angle of 60newton with the resu
Elis [28]

Answer:

100 N

Explanation:

Given that,

Two forces whose resultant is 100newton are perpendicular to each other.

If one of them makes an angle of 60newton with the resultant.

F_1=100\times \sin60=86.60\ N

and

F_2=100\times \cos60=50\ N

The magnitude of force,

F=\sqrt{F_1^2+F_2^2} \\\\F=\sqrt{86.6^2+50^2} \\\\F=99.99\ N

or

F = 100 N

So, the magnitude of force is 100 N.

6 0
3 years ago
A horizontal platform in the shape of a circular disk rotates on a frictionless bearing about a vertical axle through the center
Bess [88]

Answer:

10.93 rad/s

Explanation:

If we treat the student as a point mass, her moment of inertia at the rim is

I_r = mr^2 = 67.8*3.7^2 = 928.182 kgm^2

So the system moment of inertia when she's at the rim is:

I_1 = I_d + I_r = 274 + 928.182 = 1202.182 kgm^2

Similarly, we can calculate the system moment of inertia when she's at 0.456 m from the center

I_2 = I_d + 67.8*0.456^2 = 274 + 14.1 = 288.1 kgm^2

We can apply the law of angular momentum conservation to calculate the post angular speed when she's 0.456m from the center:

I_1\omega_1 = I_2\omega_2

\omega_2 = \omega_1\frac{I_1}{I_2} = 2.62*\frac{1202.182}{288.1} = 10.93 rad/s

8 0
3 years ago
Who has greater displacement, an astronaut who has just completed an orbit of the earth or you when you have just traveled from
Arte-miy333 [17]

Answer:

Explanation:

This is going to sound like an absurd answer, but sometimes physics can be a little strange.

This answer is weird because of the definition of displacement. It means the distance from the starting point to the ending point, disregarding what happened in between. The point is that the astronaut is at the starting point of his orbit. By definition the starting and ending points are the same. His displacement is 0.

So the answer is you have the greater displacement when you walked one way to school.  The starting point and the ending point are different. You have gone further.

However just to make things a little nasty, when you walk home again, your displacement will be the same as the astronaut's -- 0 meters because you will be right back where you started from.

7 0
3 years ago
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Fynjy0 [20]

The displacement of thoughts, feelings, fears, wishes, and conflicts from past relationships onto new relationships is called transference.

6 0
3 years ago
What three basic components are atoms made of?
zepelin [54]
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