1.

A particle of mass m is moving with a uniform velocity v_(1). It is given an impulse such that its velocity becomes v_(2). The impulse is equal to

Answer»

`m[|v_(2)|-|v_(1)|]`
`(1)/(2)m(v_(2)^(2)-v_(1)^(2))`
`m(v_(1)+v_(2))`
`m(v_(2)-v_(1))`

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