If the mass of an object is doubled and its velocity is halved, what happens to its momentum?Select an answerAIt doublesBIt halvesCIt quadruplesDIt remains the same
Question
If the mass of an object is doubled and its velocity is halved, what happens to its momentum?Select an answerAIt doublesBIt halvesCIt quadruplesDIt remains the same
Solution
Para resolver esta pregunta, primero recordemos la fórmula del momento lineal (o cantidad de movimiento) de un objeto, que es:
donde es el momento, es la masa y es la velocidad.
Ahora, consideremos los cambios dados en el problema:
- La masa del objeto se duplica, por lo que la nueva masa es .
- La velocidad del objeto se reduce a la mitad, por lo que la nueva velocidad es .
Sustituyamos estos valores en la fórmula del momento:
Simplificando la expresión:
Observamos que el nuevo momento es igual al momento original .
Por lo tanto, la respuesta correcta es:
D. Permanece igual
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