Mason and his dad are going to build a small retaining wall for the perimeter of their new pool. They go to the hardware store and purchase 120 bricks that weigh 10 kg each. They
also buy a new statue that weighs about 9,000 kilograms. How much extra weight is in their
pickup truck when they leave the store? State your answer in kilograms.

120 bricks = 10 kg

120 bricks × 10 kg = 1200 kg

1200 kg + 9000 kg = 10200 kg

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.