A vehicle with mass of 1200kg accelerates from rest upward with an incline of 1:25 and reaches a speed of 72km/h after 2 minutes, calculate the potential energy

Answer 1

how high
average speed = 72/2*10^3 = 36 *1000 meters / (3600 seconds) = 10 m/s
distance up = h = 10 m/s * 120 s * (1/25) = 48 meters
PE = U = m g h = 1200 * 9.81 on earth * 48 Joules