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vertabatt
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Homework Statement
A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N. Rolling friction can be neglected.
Homework Equations
F=ma
acceleration of car = acceleration of truck
The Attempt at a Solution
I have determined that both the car and the truck must move at the same acceleration. The car pushes off the ground with 4500N, so that:
F = ma
4500 = (1000)a
a = 4.5 m/s^2I attempted to solve for F on the truck:
F = ma
F = (2000)(4.5)
F = 9000
But this is incorrect. Should I be combining the masses so that F = (3000)(4.5)? Or am I just way off here?
I am struggling to put together the proper free-body diagram and I think its messing up my understanding of what force is on what object. A push in the right direction is appreciated! Pun intended.
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