the kinetic energy of an object with a mass of 6.8 kg and a velocity of 5.0 m/s is j. (report the answer to…
the kinetic energy of an object with a mass of 6.8 kg and a velocity of 5.0 m/s is j. (report the answer to two significant figures.)
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 $m = 6.8\ kg$ and $v = 5.0\ m/s$. Substitute into the formula: $K=\frac{1}{2}\times6.8\times(5.0)^{2}$. First, calculate $(5.0)^{2}=25$. Then, $\frac{1}{2}\times6.8\times25 = 3.4\times25$. $3.4\times25 = 85\ J$.
Answer:
85