Physics

Grade-10

Easy

Question

# “We can derive the law of conservation of momentum from second law of motion.”

This statement is ____.

- True
- False

Hint:

### Newton's second law of motion states that in an isolated system the total momentum remains the same.

## The correct answer is 'True'.

### According to Newton's second law of motion, force = change in momentum / change in time.

In an isolated system net force is zero so change in momentum is zero; this means change in momentum is zero when external force is zero i.e. in an isolated system change in momentum is zero which proves the law of conservation of momentum.

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### What is the abbreviation used for initial velocity and final velocity?

- U, V
- V, U
- u, v
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### What is the abbreviation used for initial velocity and final velocity?

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- U, V
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### In a collision,

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### In a collision,

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### What is being depicted in the given image?

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### What is missing in this statement?

The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision.

The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision.

- No external unbalanced force is acting on it
- No internal balanced force is acting on it
- External balanced force is acting on it
- Internal unbalanced force is acting on it

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The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision.

The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision.

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### “The law of conservation of momentum is valid for all the moving objects colliding together irrespective of the direction they are moving in.”

Identify whether the statement is true or false.

- True
- False

### “The law of conservation of momentum is valid for all the moving objects colliding together irrespective of the direction they are moving in.”

Identify whether the statement is true or false.

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- True
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