Energy

Question 0

Gravitational potential energy

Answer 0

Is the energy an object has due to Its position in a gravitational field relative to some reference point
Ep = mgh

Question 1

Potential energy

Answer 1

Is the energy an object has due to its position or state

Question 2

Ep = mgh

Answer 2

Ep - gravitational potential energy (measured in Joules (J))
m = mass (kg)
g = gravitational acceleration (9.8m.s^-2)
h = perpendicular height from the reference point (m)

Question 3

Kinetic energy

Answer 3

Is the energy and object has due to its motion

Ek = (1/2)mv^2

Question 4

Ek = (1/2)mv^2

Answer 4

Ek = kinetic energy (J)
m= mass (kg)
v = velocity (m.s^-1)

Question 5

Mechanical energy

Answer 5

Is the sum of the gravitational potential energy and the kinetic energy of a system
Emech = Ep + Ek
Emech = mgh + (1/2)mv^2