Suppose a car is sitting on a hill 12 meters above the road. the car has a mass of 1,200 kg. the acceleration of the car is 9.8 m/s and the velocity of the car as it begins to roll down the hill is 4.8 m/s. find the mechanical energy for this scenario.

Explanation:

The mechanical Energy associated with a body, is the sum of the potential(Energy due to its position) energy and the kinetic energy(energy due to its motion).Hence ewe can write as

The expression for the potential Energy is

while the expression for the Kinetic Energy is

since the Height,h=12m,

mass,m=1200kg,

acceleration,g =9.8

and velocity,v=4.8m/s

we can compute the Mechanical energy in kJ as

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.