Question

if you were trying to determine the kinetic energy of a baseball when it hits a window, what information/data would you need to collect? select two ( ke=\frac{1}{2}mv^{2} ) (2 points)
velocity of the baseball right before it hits the window
mass of the baseball
velocity of the baseball after it hits the window
mass of the window

Explanation:

The formula for kinetic energy is \(KE=\frac{1}{2}mv^{2}\), where \(m\) is mass and \(v\) is velocity. To find the kinetic energy of the baseball when it hits the window, we need the mass of the baseball (since \(m\) in the formula refers to the mass of the object with kinetic energy, which is the baseball here) and the velocity of the baseball right before it hits the window (because \(v\) in the formula is the velocity of the object at the moment we are calculating its kinetic energy). The velocity after hitting the window is not relevant for the kinetic - energy value at the moment of hitting, and the mass of the window has no role in the baseball's kinetic energy.

Answer:

• velocity of the baseball right before it hits the window
• mass of the baseball