The mass of the load in kilogram is an illustration of subtraction operation
The mass of the load in kilogram is (b) 1645 kg
The complete mass is given as:
[tex]\mathbf{m_t = 2.87\ tonnes}[/tex]
The mass of the lorry is given as:
[tex]\mathbf{m_l = 1.225\ tonnes}[/tex]
The mass of the load is calculated by subtracting the mass of the lorry from the mass of the lorry and its load.
So, we have the following equation:
[tex]\mathbf{m_{load} = m_t - m_l}[/tex]
Substitute known values
[tex]\mathbf{m_{load} = 2.87\ tonnes- 1.225\ tonnes}[/tex]
Subtract
[tex]\mathbf{m_{load} = 1.645\ tonnes}[/tex]
Convert to kilogram
[tex]\mathbf{m_{load} = 1.645 \times 1000kg}[/tex]
Multiply
[tex]\mathbf{m_{load} = 1645 kg}[/tex]
Hence, the mass of the load in kilogram is (b) 1645 kg
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