What type of energy is present in a barbell being lifted or a shot-put being thrown?
a. mechanical energy
b. thermal energy
c. chemical energy
d. electrical energy.

The correct answer is option A.

Explanation:

Potential energy is defined the energy of an object due to its position.

Kinetic energy is defined the energy of an object due to its motion.

Mechanical energy is defined as the sum of the both potential and kinetic energies.

M.E = P.E + K.E

When the barbell is uplifted ,the potential energy is barbell increase with small amount of kinetic energy present.

When the shot put is thrown ,the potential energy and small amount of kinetic energy is present.

Hence, the correct answer is option A.

b

step-by-step explanation: a third of 24 is 8, 8 times 3 is 24 so 8 - 2 would be 6

because it says use -2,0,and 2 for x, we can plug those numbers into the equation. y/4=3/4(-2)+2   y/4= -1 1/2 +2 now to get x by itself, we can multiply each side by 4. y=-6+8 which equals y=2 when x=-2. now you can do the same thing with 0 and 2 as x. you get y=8 when x=0 and y=14 when x=2.

x   |   y

-2 |   2

0   |   8

2   |   14