We are given:
Acceleration of the object (a) = 8.2 m/s²
Force applied on the object (F) = 20.1 newtons
Mass of the object (m) = m kg
Solving for the mass of the object:
From newton's second law of motion:
F = ma
replacing the variables
20.1 = m * 8.2
m = 20.1/8.2
m = 2.45 kg
Hence, the object weighs 2.45 kg