Question

An object has a velocity of 2m/s and a kinetic energy of 12 joules. What is its mass?

Answer 1

To find the mass of an object with a given velocity and kinetic energy, we can use the formula for kinetic energy:

$K.E.=\frac{1}{2}m{v}^2$

Where: $K.E.$ is the kinetic energy, $m$ is the mass of the object, and $v$ is the velocity of the object.

Given that the velocity is 2 m/s and the kinetic energy is 12 joules, we can substitute these values into the equation:

$12\text{joules}=\frac{1}{2}\cdot m\cdot (2\text{m/s}{)}^2$

Simplifying the equation:

$12=\frac{1}{2}\cdot m\cdot 4$

$12=2m$

Now, we can solve for the mass ($m$) by isolating it:

$m=$