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seropon [69]
3 years ago
15

Which box will not accelerate?

Physics
2 answers:
DiKsa [7]3 years ago
6 0

Answer:

b

Explanation:

i know

Vladimir79 [104]3 years ago
3 0

Answer:

b one will not accelerate

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Bart ran 5000 meters from the cops and had an average speed of 6 meters/second before he got caught. How long did he run?
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thats is a long time

Explanation:

maybe 1 hour

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An obiect of mass weighing 5,24 k acceleration due to gravity is 9 8 meters/second2 is raised to a height of 1.63 meters. What i
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A toy car accelerates from 3m/s to 5m/s in 5sec . what is the acceleration​
san4es73 [151]

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0.4

Explanation:

Because 3m/s is the initial velocity(u) and 5m/s is the final velocity(v) and time is 5 sec.

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Alex is asked to move two boxes of books in contact with each other and resting on a rough floor. He decides to move them at the
Over [174]

Answer:

Part a)

a= 0.32 m/s^2

Part b)

F_c = 3.6 N

Part c)

F_c = 5.5 N

Explanation:

Part a)

As we know that the friction force on two boxes is given as

F_f = \mu m_a g + \mu m_b g

F_f = 0.02(10.6 + 7)9.81

F_f = 3.45 N

Now we know by Newton's II law

F_{net} = ma

so we have

F_p - F_f = (m_a + m_b) a

9.1 - 3.45 = (10.6 + 7) a

a = \frac{5.65}{17.6}

a= 0.32 m/s^2

Part b)

For block B we know that net force on it will push it forward with same acceleration so we have

F_c - F_f = m_b a

F_c = \mu m_b g + m_b a

F_c = 0.02(7)(9.8) + 7(0.32)

F_c = 3.6 N

Part c)

If Alex push from other side then also the acceleration will be same

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F_p - F_f - F_c = m_b a

9.1 - 0.02(7)(9.8) - F_c = 7(0.32)

F_c = 9.1 - 0.02 (7)(9.8) - 7(0.32)

F_c = 5.5 N

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3 years ago
3.) An engineer is designing the runway for an airport. Of the planes that will use the airport,
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