How much kinetic energy does a soccer ball have while moving at $20 \mathrm {~m} / \mathrm { s }$ toward a goal?
A) 60 Joules
B) -60 Joules
C) 600 Joules
D) -600 Joules

Question

Quizplus · Accepted Answer

The kinetic energy ($KE$) of an object can be calculated using the formula $KE = \frac{1}{2}mv^2$, where $m$ is the mass of the object and $v$ is its velocity. Assuming the mass of the soccer ball is $3 \mathrm{~kg}$ (a typical mass for a soccer ball), and given its velocity is $20 \mathrm{~m/s}$, the kinetic energy would be $KE = \frac{1}{2} \times 3 \mathrm{~kg} \times (20 \mathrm{~m/s})^2 = 600 \mathrm{~Joules}$. Kinetic energy is always positive, as it represents the energy an object possesses due to its motion.

How Much Kinetic Energy Does a Soccer Ball Have While 20 m/s20 \mathrm {~m} / \mathrm { s }20 m/s

How Much Kinetic Energy Does a Soccer Ball Have While $20 \mathrm {~m} / \mathrm { s }$