Which has a greater momentum? a 1200kg car traveling at 30m/s or a 2000kg truck traveling at 20m/s

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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.