A priest is in a rested motorcar, with a mass of 780 kg, at the top of a slope of 80%. When he releases the brakes of the motorcar, it moves freely down for 25m due to
gravitational force to the bottom of the slope and then immediately onto a horizontal road
till it comes to rest at the bottom of the slope.
Calculate the following:

1.1 The velocity of the motorcar at the bottom of the slope​
1.2 The declaration of the motor at the bottom of the slope
1.3 what is the kinetic energy of the motorcar atfer 12 seconds on the horizontal road