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Ahat [919]
3 years ago
5

Can someone please help me with this.

Physics
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

14 fast 15 fast , not moving  then constant

Explanation:

14 the slope is higher

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This map shows the Mid-Atlantic Ridge, which spreads approximately 2.5 cm/year. What is the rate of the spread in m/month?
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_______       x     ________      x     ________        = 0.002 m/month
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If a force always acts perpendicular to an object's direction of motion, that force cannot change the object's kinetic energy.
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This is very good conceptual question and can clear your doubts regarding work-energy theorem.
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The unit for energy is the joule (j). If the energy content of an object is 1,000 J, but then later is found to be 900 J, what i
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A 22-g bullet traveling 265 m/s penetrates a 1.9 kg block of wood and emerges going 125 m/s .
Usimov [2.4K]

The body moves at a velocity of 1.62m/s after the bullet emerges.

<h3>Given:</h3>

Mass of bullet, m_1 = 22g

                               = 0.022 kg

Mass of the block, m_2 = 1.9 kg

Velocity of bullet , v_1 = 265 m/s

v_2 = 0

According to the law of collision which states that the momentum of the body before the collision is equal to the momentum of the body after the collision.

After penetration;

v^{'}_1 =125 m/s

v^{'}_2=?

The formula for calculating the collision of a body is expressed as:

p = mv

m is the mass of the body

v is the velocity of the body

∴ Momentum before = Momentum after

Substitute the given parameters into the formula as shown:

   m_1v_1+ m_2v_2 = m_1v^{'}_1+ m_2v^{'}_2\\0.022* 265 + 0 = 0.022*125+1.9*v^{'}_2\\5.83 = 1.9 v^{'}_2\\v^{'}_2 = 1.62 m/s

Therefore, It moves with a velocity of 1.62 m/s.

Learn more about momentum here:

brainly.com/question/25121535

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