Why Does the Rope Snap When Bob Accelerates His Truck?

[Ambushes]

Homework Statement

Sorry if i sound stupid, i just can't understand this problem.
Bob wants to tow a car with his truck. He loosely attaches a rope between the vehicles. Bob accelerates rapidly with his truck, forcing the rope to snap.

Explain the scenario using Newton's First Law.

The Attempt at a Solution

I want to say that the car wants to stay at rest, but shouldn't bob's truck be considered an external force acting upon it?

Any help would be appreciated.

 

[magnolia1]

Hi Ambushes,
First law in terms of a net force: "if there is no net force acting on a body (Fnet=0), the body's velocity cannot change and the body cannot accelerate"
The loosely tied rope probably snapped before any significant force could be exerted.
A body at rest, stays at rest.
Hope it helps!