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borishaifa [10]
4 years ago
7

What quantity does this graph of a train's motion represent? Describe the train's motion

Physics
1 answer:
Lapatulllka [165]4 years ago
3 0

Answer:

This graph shows the distance moved by the train with respect to time

Between t = 3 to t = 5 the train is at rest

Since this graph shows the distance covered by the train so it is a scalar quantity

Explanation:

Here from the graph we can see the distance covered by the train with respect to time

So here from the slope of this graph we can find the speed of the train

Also from t = 3 to t = 5 we can see that slope of the graph is zero

So here n this time interval there is no motion or it is at rest

Now since we know that this is distance vs time graph so it is a scalar quantity showing in this graph

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A boy lifted a 50 newton rock 1 meter. How much work was done?
dem82 [27]

Answer:

The answer is 50 Nm

Explanation:

<h3><u>Given</u>;</h3>
  • Applied Force = 50 Newton
  • Total Displacement = 1 meter
<h3><u>To </u><u>Find</u>;</h3>
  • Work done = ?

Here,

W = F • d

W = 50 • 1

W = 50 Nm

Thus, Work done is 50 Nm

<u>-TheUnknownScientist 72</u>

5 0
3 years ago
Read 2 more answers
A truck traveling at a constant speed of 28 m/s passes a more slowly moving car. The instant the truck passes the car, the car b
choli [55]

Answer:

the velocity of car when it passes the truck is u = 16.33 m/s

Explanation:

given,

constant speed of truck  = 28 m/s

acceleration of car = 1.2 m/s²

passes the truck in 545 m

speed of the car when it just pass the truck = ?

time taken by the truck to travel 545 m

              time =\dfrac{distance}{speed}

              time =\dfrac{545}{28}

              time =19.46 s

velocity of the car when it crosses the truck

S = ut + \dfrac{1}{2}at^2

545= u\times 19.46 + \dfrac{1}{2} \times 1.2 \times 19.46^2

u = 16.33 m/s

the velocity of car when it passes the truck is u = 16.33 m/s

5 0
4 years ago
What would have the greatest gravitational pull on each other?
denpristay [2]

Answer:

Jupiter

Characteristics of a Dwarf Planet

One of Sir Isaac Newton's accomplishments established that the gravitational force between two bodies is proportional to their masses. All other things being equal, the planet with the strongest pull is the one with the largest mass, which is Jupiter.

5 0
3 years ago
Calculate the amount of work done if you use a 100N force to push a 50kg box 5m across the kitchen floor.
irinina [24]
So if the formula for work is force times displacement times cosine(theta), you'd plug in the numbers

100x5 (since there's no angle in the problem, cosine(theta) isn't used

100x5 = 500

So the answer would be B.

Hope that helps!
6 0
3 years ago
Read 2 more answers
5. Identify the reactants in this chemical equation:<br> 2H3PO4 → HAP20, +H2O
mixas84 [53]

Answer:

H=Hydrogen, PO4=Phosphate

Explanation:

Reactions are on the left side of arrow and products are on the right side of arrow.

4 0
3 years ago
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