1. MOTION!!!

2. D R Y DRY….what does it mean? - Dependent variable
- Responding variable
- Graphed on the Y axis

3. MIX MIX….what does it mean? -Manipulated variable
- Independent variable
- Graphed on the X axis

4. Potential energy -
energy at rest An object NOT moving has potential energy.

5. - energy in motion . A moving object has kinetic energy.
Moving = kinetic
At rest and
at highest
point means
it has the most
__________
energy.
potential
Most
kinetic
energy

6. What is motion?
one object’s distance from another object is changing.

7. Reference point- a place or object
that can be used to determine if an
object is in motion.

8. What causes motion?
Force –
A push or a pull

9. Motion is always caused by
a force.
Does every force cause a
motion?

10. Balanced forces –
does not give us motion. 5N
5 N

11. Unbalanced force – gives us motion 5 N 10 N
Unbalanced forces can cause an object
to start moving, stop moving, or
change direction.

12. Unbalanced Forces and Motion
Head of arrow points in direction of the force
The width tells the strength
Wider the arrow the greater the force
Balanced forces
Unbalanced forces

14. Net force – overall force on an object
N means Newtons
100 N
25 N
125 N

15. 100 N
25 N
75 N

16. 50 N
50 N
0 N

17. 40 N
60 N
20 N

18. An object in motion will
eventually stop.
What are some forces that
will cause an object to stop
moving?

19. Friction
Friction - A force created when two surfaces rub against each other.

20. Friction - ice, wood, vinyl
Push a (SEED) book

21. Gravity force that pulls objects toward each other.
Force acts to pull objects straight down toward the center of Earth
Gravity –
force that pulls objects toward
each other.

22. Weight amount of matter in an object Mass is NOT effected by gravity!
measure of the force of gravity on an object.
Weight –
Mass –.
Which is NOT effected by gravity?
amount of matter in an object
Mass is NOT effected
by gravity!

23. Air Resistance
All objects are supposed to fall at same rate, not always the case.
Air resistance – objects falling through air experience friction from the air which is matter.
Watch and see…...

24. Free Fall
Free Fall – when the only force acting on a falling object is gravity.
In free fall; unbalanced force
All objects in free fall accelerate at the same pace regardless of mass

25. Archery competition http://www.seed.slb.com/flash/science/features
/people/archery/en/game.htm?width=720&height=500&popup=true

26. Newton’s First Law of Motion
First Law of Motion (Law of Inertia) - An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.

27. WEBSITE

28. Mass and Inertia Mass – the amount of matter in an object
Measured with the _____________________
Volume – the amount of space an object takes up. Measured with the _________________
triple beam balance
graduated cylinder

29. Newton’s Second Law of Motion
The greater the mass, the greater the force you need for the same acceleration.
Force is measured in Newtons
(change in velocity)
F = mass x acceleration
same

30. Third Law of Motion-
If one object exerts a force on a
second object, the second object
exerts a force of equal strength
in the opposite direction.
For every action there is an equal
but opposite reaction.

31. Newton’s Third Law of Motion
For every action there is an equal and opposite reaction.
Examples: rockets, swimming, skating, boating.

32. website

33. Sir Isaac Newton – English
mathematician who proposed
three laws of motion in the
late 1600’s.
These laws explain the relationship
among forces, matter, and motion.

34. Sir Isaac Newton Isaac Newton came from a family of farmers
but never knew his father who died in October
1642, three months before his son was born.
The young child was then left in the care of
his grandmother.Basically treated as an orphan,
Isaac did not have a happy childhood.
His school reports described him as 'idle' and 'inattentive'.
Isaac was taken away from school, but later allowed to return.
While Newton was still under 25 years old, he began revolutionary
advances in mathematics, optics, physics, and astronomy

35. SPEED

36. Define speed.
Miles per hour
Speed = distance/time

37. Speed- how far you traveled divided by
how long it took you to travel there.
Speed = distance/time
Calculate the speed:
A hawk flies 12 km in 2 hours.
Speed= 6 km/hour

38. We now have speed. So let’s add a direction to that speed. We now have
velocity.
We have two planes
leaving Houston Bush
International at 12:05 pm.
They both fly at the speed
of 140 miles per hour for
2 hours. Do they land in
the same place?

39. Velocity is speed with a direction
25 miles/hour west
Usually, a speed of an object is not constant.

40. Spring scale - A tool used to measure force.
Units are in ____________.
Newtons

41. Force, Mass, and Acceleration
Acceleration is when an object speeds up, slows down, or changes direction.

42. Forces- interactive

43. Newton’s Cradle
DEMO

44. Balanced Forces are A) The overall force on an object.
B) Unequal forces acting in opposite directions.
C) Equal forces acting in opposite directions.

45. Unbalance forces are A) The overall force on an object.
B) Unequal forces acting in opposite directions.
C) Equal forces acting in opposite directions.

46. Inertia is A) The ability of an object to change its motion
B) Tendency of an object to resist change in its motion.
C) The tendency of an object to increase density.

47. The wider arrow compared to the thinner arrow indicates…
A greater force
An equal amount of force
A smaller force

48. What is the net force?
25 N
15 N
A. 10 N
B. 25 N
C. 15 N
D. 40 N

49. Force is measured in
A) Figs
B) Newtons
C) Grams