A car and truck are moving next to each other on the highway. The truck has a mass of 910kg and the cars mass is 227kg. If their momentum’s are equal and the truck is moving at 18m/s, what is the speed of the car?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)