An astronaut drop a hammer and a egg while standing on the surface of the moon. which one will hit the surface first?

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.