Video: Explain three Newton's laws by bike

Three laws of Newton's motion can explain why humans cannot pedal a vehicle weighing several tons.

Everything tends to continue to do what it is doing.

Have you ever noticed when starting a bike, it is more difficult than when the car is moving at a constant speed? Do you ask yourself, what made cars move? Or think why does it move forward? Probably not, and you are not the only one.

This is a mystery until the 17th century, when describing the fundamental laws of motion and answering us with these questions.