Question

a line of dominos is knocked down. which explanation is true? (1 point) an increase in acceleration caused an increase in force. an increase in force caused an increase in acceleration. an increase in acceleration caused a decrease in force. an increase in force caused a decrease in acceleration.

Explanation:

According to Newton's second - law of motion, $F = ma$ (where $F$ is force, $m$ is mass, and $a$ is acceleration). When the mass of the dominoes is constant, an increase in force will cause an increase in acceleration. When one domino hits another, the applied force makes the next domino accelerate.

Answer:

An increase in force caused an increase in acceleration.