Zoom a 50,000 kg box car traveling at 5.5 m/sec and is loaded with a dubious cargo. as it travels north on a railroad track it collides inelastically (stickage) with 3 empty box cars ( at rest ) which have a combined mass of 30,000 kg. determine the final velocity of these cars as they travel down the track.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card