Question

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Answer 1

Answer:

1. b

2. a

3. a

2.i) It is a vector quantity which means it can be +ve,-ve or 0. When we add direction in speed it becomes velocity. SI unit of velocity is m/s^2.

ii) Momentum refers to the inertia of motion. Momentum is directly proportional to mass

It is also directly proportional to velocity.

So we can say that momentum is directly proportional to both mass and velocity.

We show momentum as 'p'.