Question

If the car is at rest at W and has energy of 12000 J.

a) What will be it KE at X if the PE at X is 5200 J?

b) What will be its KE as it reaches the final point Y down the hill?

c) What will be its PE at the point Y?

d) What will be its mechanical energy at W,X and Y?

ii) Define kinetic energy and explain the factors on which the kinetic energy

depends on?​

Answer 1

Answer:

A roller coaster ride also illustrates the work and energy relationship. The work done by external forces is capable of changing the total amount of mechanical energy from an initial value to some final value. The amount of work done by the external forces upon the object is equal to the amount of change in the total mechanical energy of the object. The relationship is often stated in the form of the following mathematical equation.