Question

You throw a baseball with a mass of 0.5 kg. The ball leaves your hand with a speed of 35 m/s. Calculate the kinetic energy. (SHOW ALL WORK)

Answer 1

The kinetic energy of the baseball is 306.25 joules.

Step-by-step explanation:

SInce the baseball can be considered a particle, that is, that effects from geometry can be neglected, the kinetic energy (
`K`), in joules, is entirely translational, whose formula is:

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

Where:

`m` - Mass, in kilograms.

`v` - Speed, in meters per second.

If we know that
`m = 0.5\,kg` and
`v = 35\,(m)/(s)`, then the kinetic energy of the baseball thrown by the player is:

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

`K = 306.25\,J`

The kinetic energy of the baseball is 306.25 joules.