A4,300 lb car pulls a 1,600 lb trailer. the car and trailer accelerate from 30 mph to 47 mph at a rate of 3.28 ft/s2. the linear impulse that car in parts to the trailer is most nearly

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600