A 22.2 kg mass attached to a spring scale rests on a smooth, horizontal surface. The spring scale, attached to the front end of a boxcar, reads T 44.1 N when the car is in motion. If the sring scale reads zero when the car is at rest, determine te acceleration of te car, when it is in motion as indicated above.

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To determine the acceleration of the car, we need to use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.

In this case, the force being measured by the spring scale is the tension force (T) acting on the mass attached to it. The force of tension is equal to the mass (m) multiplied by the acceleration (a).

So we have the equation:

T = m * a

Rearranging the equation to solve for acceleration (a), we have:

a = T / m

Plugging in the given values:

Mass (m) = 22.2 kg
Tension (T) = 44.1 N

a = 44.1 N / 22.2 kg
a ≈ 1.986 m/s²

Therefore, the acceleration of the car, when indicated by the spring scale, is approximately 1.986 m/s².