PART A) 40 J of work is required to stretch an ideal spring from 1.7 M beyond its rest length to 3.8 M beyond its rest length. Calculate its spring constant, k.k=__N/m

PART B) A 1552 KG car accelerates from 0 to 23. 8 M/ S in 8.6 seconds. Assume negligible friction and air assistance. Determine the average effective power delivered by the engine and horsepower. (Note: 1 hp= 746 W) Pavg= ___ hp