Question

fill in the blank question
you are causing a wagon to accelerate by applying a force to it. if someone doubled the mass by adding stuff to the wagon and you wanted to keep the acceleration the same as it had been before, you must ______ the force you apply.

Explanation:

This relies on Newton's second law of motion, $F=ma$ (force equals mass times acceleration). To keep acceleration $a$ constant when mass $m$ is doubled, the applied force $F$ must also be doubled.

Answer:

double