Answer:
Mass of the rock is 12.25kg
Explanation:
Kinetic energy can be defined as the energy possessed by an object as a result of its motion. Simply stated, it is the energy due to motion.
Mathematically, it is given by;
[tex]K = \frac{1}{2}mv^{2}[/tex]
Given the following data;
Velocity, V = 1.4m/s
Kinetic energy, K = 12J
Mass, m = ?
The formula for calculating the kinetic energy of an object is;
[tex]K = \frac{1}{2}mv^{2}[/tex]
Substituting into the equation, we have;
12 = ½*m*(1.4)²
We cross-multiply;
24 = 1. 96m
m = 24/1.96
m = 12.25kg.
Hence, the mass of the rock is 12.25kg.
