Question

A shot-putter throws a 5.0 kg shot at a speed of 10.0 m/s . What is the kinetic energy of the shot?1,000 J50 J250 J500 J

Answer 1

250 J

Step-by-step explanation:

The kinetic energy can be calculated as:

`K=(1)/(2)m\cdot v^2`

Where m is the mass and v is the velocity. So, replacing m by 5 kg and v by 10.0 m/s, we get:

`\begin{gathered} K=(1)/(2)(5)(10^2) \\ K=(1)/(2)(5)(100) \\ K=(1)/(2)(500) \\ K=250\text{ J} \end{gathered}`

Therefore, the answer is 250 J