Respuesta :

samuraijack
Given: Kinetic energy K.E = 18 J; 

           Velocity = 3 m/s

Formula: K.E = 1/2 mV²

               m = 2 K.E/V²

               m = 2(18 Kg.m²/s²)/(3 m/s)²

               m = 36 Kg.m²/s²/9 m²/s²

               m = 4 Kg



samueladesida43

The mass of a rolling ball with kinetic energy of 18 joules and velocity of 3m/s is 4kg.

HOW TO CALCULATE MASS?

The mass of a moving object can be calculated by using the following expression:

K.E = ½ mv²

Where;

  • K.E = kinetic energy (Joules)
  • m = mass (kg)
  • v = velocity (m/s)

According to this question, rolling ball has 18 joules of kinetic energy and is rolling at 3m/s. The mass is calculated as follows:

18 = ½ × m × 3²

18 = ½ × 9m

36 = 9m

m = 4kg

Therefore, the mass of a rolling ball with kinetic energy of 18 joules and velocity of 3m/s is 4kg.

Learn more about mass at: https://brainly.com/question/15959704

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