Transcript 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20

Chapter 10 Forces
Jeopardy Review
10
10
10
10
10
20
20
20
20
20
30
30
30
30
30
40
40
40
40
40
50
50
50
50
50
Forces 10 Points
• The amount of matter in an
object.
• What is mass?
Forces 20 points
• A unit of force.
• What is a Newton?
Forces 30 points
• This type of force causes an
objects motion to change.
• What is an unbalanced
force?
Forces 40 points
• When forces can be added
together.
• What is when they are acting on
the same object?
Forces 50 points
• The units in a Newton.
• What are
2
kg·m/s ?
Friction 10 points
• Friction acts in a direction ______
to the direction of an object’s
motion.
• What is opposite?
Friction 20 points
• The type of friction on a
dry slide.
• What is sliding friction?
Friction 30 points
• The type of friction on a water
slide.
• What is fluid friction?
Friction 40 points
• The type of friction when air rushes
against an airplane.
• What is fluid friction?
Friction 50 points
• One way to decrease friction.
• What are oil, wheels, smooth
surfaces?
Gravity 10 points
• The force that acts between
all objects in the universe.
• What is gravity?
Gravity 20 points
• The measure of the force of
gravity on an object.
• What is weight?
Gravity 30 points
• As the distance decreases
between two objects, the force of
gravity does this.
• What is increase?
Gravity 40 points
• What happens to an object in free
fall.
• What is it accelerates in a
downward direction?
Gravity 50 points
• Why a ball on the moon will travel
further than a ball on Earth.
• What is because the moon has 1/6
less gravity and the ball will take
longer to fall?
Newton’s
st
1
&
nd
2
Laws 10 points
• Newton’s 1st Law.
• What is a body at rest will stay
at rest, a body in motion will
stay in motion unless acted
upon by an unbalanced force.
Newton’s
st
1
&
nd
2
Laws 20 points
• The equation for Newton’s 2nd
Law.
• What is F=M x A or
Acceleration = Net Force/Mass?
Newton’s
st
1
and
nd
2
Laws 30 points
• According to Newton’s 2nd Law
of Motion, what happens to an
object if the force increases.
• What is acceleration increases?
Newton’s
st
1
and
nd
2
Laws 40 points
• Why a person inside a car keeps
moving even when the car stops.
• What is Newton’s 1st Law of
Motion?
Newton’s
st
1
&
nd
2
Laws 50 points
• The net force of a 55 kg water
skier accelerating at 2.0 m/s2.
• What is 110 N (110
2
kg·m/s )?
Newton’s
rd
3
Law 10 points
• Why a rocket rises into the air.
• What is gases go downward and the
rocket goes upward?
Newton’s
rd
3
Law 20 points
• The action/reactions forces in the
rocket racers.
• What is the action was the air coming out
of the balloon, the reaction was the racer
moving in the opposite direction ?
Newton’s
rd
3
Law 30 points
• The momentum of an object
depends on these two variables.
• What are mass and velocity?
Newton’s
rd
3
Law 40 points
• Law of Conservation of
Momentum.
• What is the total momentum of any
group of objects remains the same
unless an outside force acts on the
object?
Newton’s
rd
3
Law 50 points
• The momentum of a 250 kg
dolphin swimming 4 m/s.
• What is 1000 kg·m/s?