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Legs
A forklift.
The distance the aircraft travels on the ground before lifting off, or the same when landing.
Physics.
The term for lifting the front wheel of a bicycle off the ground while balancing on the rear wheel is called a "wheelie."
Always remember to lift with your legs and not your back to avoid injury. Keep your back straight, bend at the knees, and engage your core muscles to support the lift. Additionally, make sure to hold the object close to your body to lessen strain on your muscles.
newton's second law
This is true
It contracts
newton's third law
You should primarily use your legs to lift off the ground. Engage your leg muscles, keep your back straight, and lift using the strength of your legs to prevent injury and maintain good lifting form.
To prevent injury when lifting heavy objects off the ground, use proper lifting techniques such as bending at the knees, keeping the back straight, and using your legs to lift the object instead of your back. Additionally, make sure to lift with a straight back and avoid twisting while lifting. It is also important to ask for help or use lifting aids if the object is too heavy to lift safely on your own.