Physics
Grade-8
Easy
Question
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
- no external force is acting on it
- no internal force is acting on it
- external force is acting on it
- internal force is acting on it
Hint:
Law of conservation of momentum
The correct answer is: no external force is acting on it
- Law of conservation of momentum states that for two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied.
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