Please write clearly for Problem 1, 2, and 3

I A ball rolls down an inclined surface that make a 30 angle with horizontal direction. If the ball travels 10 m down the inclined surface, and all its potential energv is converted into kinetic energy, calculate the velocity of the ball at the end of the travel. Heat transfer rate from a hot potato can be expressed as Q = Sis\"'0\" where t is measured in seconds and Q is measured in watts. What is the total heat transfer from the potato, in H, from t = 0 s to t = 150 3. What is the average heat transfer rate between t = D s and t = 150 s? 1 A pump increases the pressure of water from 100 kPa to 300 kPa while its velocitv remains constant. What is the change of mechanical energv of water per unit mass if we assume both inlet and exhaust of the pump are at the same elevation. This is called mechanical work of the pump