Question

Total mechanical energy is equal to _____. PE + KE PE × KE PE ÷ KE PE - KE

Answer 1

Answer:

The total mechanical energy is equal to P.E+K.E.

(a) is correct.

Explanation:

Potential energy :

Potential energy is the store energy and It is represents by U.

It is defined as:

$P.E= U =mgh$

Where, m = mass of the object

g = acceleration due to gravity

h =height

Kinetic energy :

Kinetic energy is defined as the energy of motion. It represents by K.

It is defined as:

$K.E = \dfrac{1}{2}mv^2$

Where, m = mass of the object

v = velocity of the object

According to law of conservation,

The total mechanical energy is the sum of the potential energy and kinetic energy is constant in time.

$T = P.E+K.E$

Hence, The total mechanical energy is equal to P.E+K.E.

Answer 2

Total mechanical energy is

potential energy plus genetic energy

The answer is the first choice