why does the shopping cart become harder to push at the end when there is more stuff in it? explain using…
why does the shopping cart become harder to push at the end when there is more stuff in it? explain using newtons second law.
Answer
Explanation:
Step1: State Newton's second law
Newton's second law is $F = ma$, where $F$ is force, $m$ is mass, and $a$ is acceleration.
Step2: Analyze the situation
As more stuff is added to the shopping - cart, its mass $m$ increases. To move the cart with a certain acceleration $a$, according to $F=ma$, when $m$ increases and $a$ is kept constant (assuming we want to move the cart at a steady speed or with a certain desired acceleration), the force $F$ we need to apply must increase. So it becomes harder to push.
Answer:
As the mass of the shopping - cart increases with more stuff in it, according to Newton's second law $F = ma$, a greater force is required to achieve the same acceleration, making it harder to push.