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A body of mass 1 kg moves with a velocity 5 m s-1. A force is applied on it for 1 ms such that its velocity is increased to 7 m s-1. The force applied on the body is ________N.

Question

A body of mass 1 kg moves with a velocity 5 m s-1. A force is applied on it for 1 ms such that its velocity is increased to 7 m s-1. The force applied on the body is ________N.

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Solution

Para resolver este problema, sigamos los siguientes pasos:

  1. Determinar el cambio en la velocidad (Δv): Δv=vfvi \Delta v = v_f - v_i Donde vf v_f es la velocidad final y vi v_i es la velocidad inicial. Δv=7m/s5m/s=2m/s \Delta v = 7 \, \text{m/s} - 5 \, \text{m/s} = 2 \, \text{m/s}

  2. Calcular la aceleración (a): La aceleración se puede calcular usando la fórmula: a=ΔvΔt a = \frac{\Delta v}{\Delta t} Donde Δt \Delta t es el tiempo durante el cual se aplica la fuerza. Dado que Δt=1ms=1×103s \Delta t = 1 \, \text{ms} = 1 \times 10^{-3} \, \text{s} : a=2m/s1×103s=2000m/s2 a = \frac{2 \, \text{m/s}}{1 \times 10^{-3} \, \text{s}} = 2000 \, \text{m/s}^2

  3. Aplicar la segunda ley de Newton para encontrar la fuerza (F): La segunda ley de Newton establece que: F=ma F = m \cdot a Donde m m es la masa del cuerpo y a a es la aceleración. F=1kg×2000m/s2=2000N F = 1 \, \text{kg} \times 2000 \, \text{m/s}^2 = 2000 \, \text{N}

Por lo tanto, la fuerza aplicada sobre el cuerpo es de 2000 N.

This problem has been solved

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