Respuesta :

The change in momentum of the object will be 20 kg m/s

change in momentum = final momentum - initial momentum

                                     = mass* velocity (final) - mass* velocity (initial)

                                     = m ( v (final)  - v (initial) )

                                     = 1 ( 10 - ( -10 ))

                                     = 20 kg m/s

The change in momentum of the object will be 20 kg m/s

To learn more about momentum here :

https://brainly.com/question/24030570

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