Question

A student wants to determine the effect of mass on kinetic energy. She will drop two balls of the same size into a pool of water. Which investigation method should the student use?(1 point) Responses She should drop two balls with different masses from different heights. She should drop two balls with different masses from different heights. She should drop two balls with different masses from the same height. She should drop two balls with different masses from the same height. She should drop two balls of the same mass from the same height. She should drop two balls of the same mass from the same height. She should drop two balls of the same mass from different heights.

Answer 1

To determine the effect of mass on kinetic energy, the student should drop two balls with different masses from the same height. This method allows her to isolate the variable of mass while ensuring that the potential energy (and thus the kinetic energy at the moment of impact) is the same for both balls because they are dropped from the same height.

So the correct response is: She should drop two balls with different masses from the same height.