A 20-kg mass is released from rest with the spring unstretched, the mass is attached to a massless spring (k = 380 N/m) that passes over a frictionless massless pulley, as shown in Figure. What is the speed of the mass at the instant when it has dropped a vertical distance of 0.40 m? m Select one: o a. 3.6 m/s O b. 4.8 m/s o C. 2.8 m/s d. 2.2 m/s Given an array A of size N. write three functions that do the following: 1. Get the value of the maximum number in the array. 2. Get the value of the minimum number in the array. 3. Count the prime numbers in the array