我要问一小段英文You can’t take a step without applying Newton’s thir
我要问一小段英文
You can’t take a step without applying Newton’s third law,which explains that for every action there is an equal and opposite reaction.Each time your foot pushes down on the ground,the ground pushes back with the same amount of force pointed in precisely(精确地,准确地) the opposite direction.In fact,it’s the force exerted(施加压力) by the ground that pushes you along,not the force of your foot.