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sergejj [24]
3 years ago
9

A 3.0-kg block being pulled across a table by a horizontal

Physics
1 answer:
zlopas [31]3 years ago
6 0
Acceleration = 75/3 = 25 m/s^2
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Answer:B

Explanation:

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A person trapped outside during a thunderstorm should
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A 300 g bird flying along at 6.0 m/s sees a 10 g insect heading straight toward it with a speed of 30 m/s. the bird opens its mo
Bumek [7]

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<em>6.77m/s</em>

Explanation:

Using the law of conservation of momentum

m1u1 + m2u2 = (m1+m2)v

m1 and m2 are the masses of the object

u1 and u2 are the velocities before collision

v is the final collision

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m1 = 300g  = 0.3kg

u1 = 6.0m/s

m2 = 10g = 0.01kg

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Required

The bird's speed immediately after swallowing v

Substitute the given values into the formula

m1u1 + m2u2 = (m1+m2)v

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1.8+0.3 = 0.31v

2.1 = 0.31v

v = 2.1/0.31

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<em>Hence the bird's speed immediately after swallowing is 6.77m/s</em>

5 0
3 years ago
Need help... 44 points!!!!
vladimir1956 [14]

As per conditions described here we know that all force arrow are not of equal length

So all forces are not same in magnitude

Here applied force on right direction is more in magnitude then the friction force on left

So it will have net unbalanced force towards right due to which it will move towards right direction or in the direction of net unbalanced force

While in the upward and downward direction the forces are balanced and hence the box will not move in that direction

So normal force will be balanced by gravitational force

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The forces acting on the box are <u>UNBALANCED</u> .

The box will move to the <u>RIGHT</u> .

7 0
4 years ago
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What did Alfred wegener notice about the outlines of the continents
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He noticed that the outlines of the continents looked like they could fit together similar to puzzle pieces
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