The car undergoes an acceleration a of
a = (0 - 22.0 m/s) / (25.0 s) = -0.880 m/s²
The force acts in a direction opposite the car's motion, so the car has mass m such that
-1510 N = m (-0.880 m/s²)
m = (1510 N) / (0.880 m/s²) ≈ 1715.91 kg ≈ 1720 kg
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