an object with a mass of 2 kg is moving with a velocity of 15 m/s. what is the kinetic energy of the…
an object with a mass of 2 kg is moving with a velocity of 15 m/s. what is the kinetic energy of the object?\na. 2 j\nb. 15 j\nc. 30 j\nd. 225 j
Answer
Explanation:
Step1: Recall kinetic - energy formula
The formula for kinetic energy is $K = \frac{1}{2}mv^{2}$, where $m$ is the mass and $v$ is the velocity.
Step2: Substitute given values
Given $m = 2\ kg$ and $v = 15\ m/s$. Substitute into the formula: $K=\frac{1}{2}\times2\times(15)^{2}$.
Step3: Calculate the result
First, $(15)^{2}=225$, then $\frac{1}{2}\times2\times225 = 225\ J$.
Answer:
D. 225 J