WILL GIVE 30 points no scams or I will report and delete Describe three machines that humans have designed and explain how the mechanical advantage

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

What is the speed of an object at a given moment?

Ahockey player of mass 82 kg is traveling north with a velocity of 4.1 meters per second he collides with the 76 kg player traveling east at 3.4 meters per second if the two players locked together momentarily in what direction will they be going immediately after the collision how fast will they be moving