the mass of an object with 500 j of kinetic energy moving with a velocity of 5 m/s is kg. (report the answer…
the mass of an object with 500 j of kinetic energy moving with a velocity of 5 m/s is kg. (report the answer to one significant figure.)
Answer
Answer:
40
Explanation:
Step1: Recall kinetic - energy formula
$K = \frac{1}{2}mv^{2}$, where $K$ is kinetic energy, $m$ is mass and $v$ is velocity.
Step2: Rearrange formula for mass
$m=\frac{2K}{v^{2}}$
Step3: Substitute given values
$m=\frac{2\times500}{5^{2}}=\frac{1000}{25}=40$ kg