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sciencecats
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Homework Statement
A truck is pulling a car.
1. The truck is driving up a mountain with a constant velocity, neglecting friction.
2. The truck is speeding up while driving up a mountain, neglecting friction.
3.The truck is driving with a constant velocity, but as it turns out, the driver of the car left the emergency brake on.
Homework Equations
F=ma
The Attempt at a Solution
I know that the answer to all of the scenarios are FT = FC > 0 (the key for this past homework problem is available to me), but I trying to explain the concept to myself. The 3rd one is the hardest one for me. I suppose since the mass of the car and truck are not changing, that the truck must be moving at a faster speed to compensate for the emergency brake? Am I thinking about this correctly?