30 points and explain how to find the kinetic and potential energy a 2-kg ball rolls at 2 m/s along a table that is 1 meter off the ground. how much mechanical energy does the ball have?

19.6 j

4 j

15.6 j

23.6 j

⭐Hey User

⭐Since here the Energy can be calculated as ..

↪KINETIC ENERGY = 1/2 *M * V^2

↪here M = mass of the body and V = its velocity..

↪thus K.E. = 1/2 *(2)*(2)^2 = (4) = 4 joules

↪POTENTIAL ENERGY = Mgh

↪here M = mass of the body , g = Accelation due to the gravity and h = height from the ground ..

↪thus P.E. = (2) * (9.8)*(1)= 19.6

↪P.E. = 19.6 joules ..

↪thus we know that MECHANICAL ENERGY = POTENTIAL ENERGY + KINETIC ENERGY

↪THUS MECHANICAL ENERGY = 19.6 + 4 = 23.6 J

〽⭐therfore the M.E possed = 23.6 J