Question

how can you push your 2 - year - old baby brother (mass of 20kg) and your dad (mass of 100kg) in a swing so that they have the same acceleration?
push dad with less force
push baby brother with less force
push both of them with the same force
push baby brother with more force

Explanation:

Step1: Recall Newton's second law

$F = ma$, where $F$ is force, $m$ is mass and $a$ is acceleration.

Step2: Analyze the situation for different masses

If $a$ is to be the same for two different masses $m_1$ and $m_2$ ($m_1

Answer:

Push baby brother with less force