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)

Question

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 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.
She should drop two balls of the same mass from different heights.

She should drop two balls with different masses from the same height.

Answer 1

To determine the effect of mass on kinetic energy, the student should keep other variables constant while changing only the variable of interest, which is mass. The correct method for this investigation is:

She should drop two balls with different masses from the same height.

This way, the only variable that changes is the mass of the balls, while the height from which they are dropped remains constant, allowing her to observe how mass affects kinetic energy when they reach the water.