Usaha dan Energi

1. INTRUCTIONAL MEDIA
SINTIA
RSA1C314013
PROGRAM STUDI PENDIDIKAN FISIKA PGMIPA-U
FAKULTAS KEGURUAN DAN ILMU PENDIDIKAN
UNIVERSITAS JAMBI
2015

2. Materi Test

3. Materi Test
Work
Energy

4. Work in physics is defined as the
ability of the forces acting on an
object
Work = Force X Sift
Work

5. If the sift parallel to the direction
of the force, then
W = F . s
W= work
F= force
s= sift

6. Work may be positive (+),
negative (-), and can be
zero (0).

7. if the direction of the force makes an
angle to the plane, then the force should
be described prior to the direction of the
axis of coordinates.

8. Energy
Energy is the ability to do
work
Energy Mechanical
energy
Kinetic energy
Other energy
Potential
energy

9. Potential Energy
Potential energy is energy that thing
because the position of the reference
point
Potential EnergyEp
Gravity
Ep gravity
newton
Ep Spring

10. gravitational potential energy
gravitational potential energy is the
potential energy of an object which is
caused by the position of objects on
the Earth's gravity
Ep= m.g.h
Ep = potential energy (J)
m = object mass (kg)
g = acceleration of gravity (m/s^2)
h = position (m)

11. Kinetic energy
Kinetic energy is energy that has
object because its motion or its speed
Ek= ½ . M. V^2
Ek = kinetic energy (J)
m = mass of the object (kg)
v = velocity (m / s ^ 2)

12. Mechanical energy
Mechanical energy is the
total energy possessed by an
object. Mechanical energy is
derived from the potential
energy and kinetic energy of
the object
Em= Ek+Ep