- #1
Peter G.
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I was reading about inertia and there was this cartoon on my textbook.
This guy puts on rollerblades and steps on to a bus. "Magically" as the car accelerates he ends up at the end of the vehicle and when he wants to step out the bus he simply stands up and, "magically" ends up at the entrance as the bus brakes.
So when the bus accelerates it moves forward, the guy ends up on the back of the bus: Is this because the force of the bus acceleration is not great enough to overcome his inertia so as the bus moves forward he, without "moving", ends up at the back of the bus? Or is the bus exerting a force on him making him move?
I don't know, I mean they explained about the car crashes too and I understood that our bodies are moving and if no resultant force great enough to overcome our reluctance of keep moving forward acts on us we will keep on moving in a straight line and how inertia is dependent on weight, not on mass but I can't grasp the inertia concept on this diagram.
Thanks in advance
This guy puts on rollerblades and steps on to a bus. "Magically" as the car accelerates he ends up at the end of the vehicle and when he wants to step out the bus he simply stands up and, "magically" ends up at the entrance as the bus brakes.
So when the bus accelerates it moves forward, the guy ends up on the back of the bus: Is this because the force of the bus acceleration is not great enough to overcome his inertia so as the bus moves forward he, without "moving", ends up at the back of the bus? Or is the bus exerting a force on him making him move?
I don't know, I mean they explained about the car crashes too and I understood that our bodies are moving and if no resultant force great enough to overcome our reluctance of keep moving forward acts on us we will keep on moving in a straight line and how inertia is dependent on weight, not on mass but I can't grasp the inertia concept on this diagram.
Thanks in advance