Question

if two carts have the same mass but different forces applied, what will differ? their shape. their color. their acceleration. their mass.

Explanation:

According to Newton's second - law $F = ma$ (where $F$ is force, $m$ is mass, and $a$ is acceleration). When $m$ is the same and $F$ is different, $a$ will be different. Shape, color, and mass are not affected by the applied force in this context.

Answer:

C. Their acceleration.