Download Unit 3 Jeopardy - Motion and Newton

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Motion and
Acceleration
Speed
Force and
Gravity
Laws of
Motion
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1. This graph contains information about the motion of a bicycle. At which of
the following times is the bicycle’s acceleration zero?
a. 1 second
b. 2 seconds
c. 4 seconds
d. 8 seconds
4s
The relationship among
speed, distance and
time? (equation for
speed)
S = d/t
A driver starts her car and steps on the gas pedal. The car gradually accelerates to 50
km/hr. A few minutes later, the driver suddenly slams on the brakes to avoid hitting a box
in the road. As the car comes to a stop, the driver’s body appears to lurch forward in the
seat until it is restrained by the seatbelt.
Which graph best matches the motion of the car described in the paragraph
above?
a. A
b. B
c. C
d. D
c
A merry-go-round
moves at a constant
speed, but what
changes?
velocity
On a velocity time
graph, when the slope
is going down, what
type of acceleration is
there?
Negative
Acceleration is a
rate of change of
what?
Velocity
If you ride your bike up a
hill then down a hill, what
type of acceleration do
you have going up the hill,
then down?
Negative then
positive
What is the unit for
acceleration?
m/s
2
What is the
equation used to
find accleration
with velocity and
time?
Vf – Vi /t
If gravity did not affect
the path of a
horizontally thrown
ball, what would
happen to the ball?
Continue to go
horizontally at same
speed and direction until
acted on by outside force
When an object
moves in a circular
path, it accelerates
toward the center
as a result of?
Centripetal force
What is
acceleration due to
gravity?
9.8 m/s
2
What two things
does the gravitional
force between two
objects depend on?
Mass
Distance between two
objects
Your binder is sitting at rest on your desk.
Which of the following statements best
describes this situation?
a. There are no forces acting on your paper.
b. There are several forces acting on your paper,
but they balance each other
c. Your paper is at rest in any coordinate system.
d.
Your paper exerts no force on the desk.
b
What is another
name for Newton’s
first law of motion?
intertia
Inertia varies
depending on?
Mass
Compare the
acceleration of the
boy to the girl
Girl accelerate
more because less
mass
The relationship among force,
mass and acceleration
nd
2
law
A 300 N force acts
on a 25 kg object.
What is the
acceleration of the
object?
12
2
m/s
What happens to
your weight as you
get farther from
earth?
decrease
velocity
If this box is slidding to the
right, in what direction is
friction working?
left
Figure 7-2
14. Figure 7-2 above shows the circular path of a toy plane being swung
around on a string. What path would the toy take is the string broke?
a
In the diagram below, the moon orbiting
planets A and C has more mass than the
artificial satellite circling planet B. If
planets A,B and C all have the same mass,
which satellite has the greatest gravitational
attraction to it’s planet?
A
•
Moon has more mass than artificial satellite
•
Moon is closer to planet A than planet C
Two semis are traveling down the
interstate at 100 km/hr. Semi A is
hauling a load of chickens to
market. Semi B is hauling a load
of steel pipe to Duke Energy.
Which semi has the greatest
momentum AND why?
B, because it has
more mass
(momentum = mv
Make your wager
A 50 kg cannon ball is shot out of a
cannon with a force of 10,000 N.
The velocity of the cannon ball
through the air is 30m/s
a.
List two ways to increase the force at
which the cannon ball is pushed out
b.
If a force of 20,000 N acts on the ball,
what is the new acceleration?
a. Increase mass, Increase
acceleration
b. 400
2
m/s