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dmitriy555 [2]
4 years ago
14

The two particles are both moving to the right. Particle 1 catches up with particle 2 and collides with it. The particles stick

together and continue on with velocity vf. Which of these statements is true?
a. vf= v2
b. vf is less than v2.
c. vf is greator than v2, but less than v1.
d. vf= v1
Physics
1 answer:
Travka [436]4 years ago
4 0

Answer:

c. vf is greator than v2, but less than v1

Explanation:

The principle of conservation of linear momentum states that when two or more bodies act upon one another, their total momentum remains constant.

In a system of colliding bodies the total momentum of the system just before the collision is the same as the total momentum just after the collision.  

Collisions in which the kinetic energy is conserved are called elastic collision.

Collisions in which the kinetic energy is not conserved are called inelastic collisions.  If the two objects stick together after the collision and move with a common velocity, the collision is said to be perfectly inelastic.

<em>The above scenario is a perfectly inelastic collision. The initial velocity of particle 1 was greater than particle 2 before collision. After collision, its velocity will reduce to a final velocity vf as it transfers some of its kinetic energy to particle 2; whereas, the velocity of particle 2 will increase to a final velocity vf as it absorbs some of the kinetic energy of particle 1.</em>

Therefore,

a. vf = v2 is wrong because vf is greater than v2

b. vf is less than v2 is wrong because vf is greater than v2

c. vf is greater than v2, but less than v1 is correct.

d. vf = v1 is wrong because vf is less than v1

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6 0
3 years ago
I need to explain how objects can have the same volume but different mass. Help??
kaheart [24]
No problem, and you already know all about it.

Here are a few examples of same volume / different weight:

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So how come, in each example, things with the same volume have different mass ?
This was your original question.

The answer is just the simple fact that there are millions of different substances, and
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The amount of mass that a substance packs into a standard volume is called
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is 19 times as dense as water.  If you have a jar that holds a pound of water, and
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The reason you were assigned to think about this question for homework is that
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6 0
4 years ago
Area<br>find (a) volume and b) Total surface<br>of hemi shere with diameter<br>28 cm​
AlekseyPX

Answer:

a) Volume = 2/3 \pir³

Volume = 2/3 × 22/7 × 14 × 14 × 14 = 5749.3 cm³

b) Total surface area = 3\pir²

Area = 3 × 22/7 × 14 × 14 = 1848 cm²

5 0
4 years ago
Read 2 more answers
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