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12345 [234]
2 years ago
9

Why does the momentum before a collision equal the momentum after a collision?

Physics
2 answers:
Art [367]2 years ago
8 0

Answer: Correct option is C) because momentum is conserved

 

Explanation:

According to law of conservation of linear momentum if net external force on a system is zero then the total momentum of the system will be conserved .

<u>For a collision occurring between object 1 and object 2 in an isolated system</u>

If we consider the two colliding object as a single system then while collision the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.

Thus momentum before collision equal the momentum after a collision because momentum is conserved .  

kotykmax [81]2 years ago
3 0
The answer is C. Due to conservation of momentum.
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At a certain time a particle had a speed of 48 m/s in the positive x direction, and 4.5 s later its speed was 92 m/s in the oppo
larisa86 [58]

Answer:

-31.1 m/s^2

Explanation:

The acceleration of an object is the rate of change of velocity of the object.

Mathematically, it is calculated as:

a=\frac{v-u}{t}

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v = -92 m/s is the final velocity (negative direction)

t = 4.5 s is the time interval

Therefore, the average acceleration is

a=\frac{v-u}{t}=\frac{-92-(+48)}{4.5}=-31.1 m/s^2

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3 years ago
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