a pitcher throws a 0.145-kg baseball at a velocity of 30.0 m/s. how much kinetic energy does the ball have?
See previous post.
To calculate the kinetic energy of an object, you can use the formula:
Kinetic Energy = 0.5 * mass * velocity^2
Given:
Mass of the baseball (m) = 0.145 kg
Velocity of the baseball (v) = 30.0 m/s
Substituting these values into the formula, we get:
Kinetic Energy = 0.5 * 0.145 kg * (30.0 m/s)^2
Now let's solve this equation step by step:
1. Square the velocity:
(30.0 m/s)^2 = 900 m^2/s^2
2. Multiply the mass by the squared velocity:
0.5 * 0.145 kg * 900 m^2/s^2 = 65.25 kg⋅m^2/s^2
Therefore, the baseball has a kinetic energy of 65.25 kg⋅m^2/s^2 or Joules (J).