Blank Jeopardy Game

1
Momentum
2
The P is Silent
3
Impulse
4
Collisions
5
Conservation of Momentum
6
Physics is Phun!
7
The P is Silent
Physics is Phun!
Impulse
Collisions
Conservation Of Momentum
5 pt.
5 pt.
5 pt.
5 pt.
5 pt.
10 pt.
10 pt.
10 pt.
10 pt.
10 pt.
15 pt.
15 pt.
15 pt.
15 pt.
15 pt.
20 pt.
20 pt.
20 pt.
20 pt.
20 pt.
25 pt.
25 pt.
25 pt.
25 pt.
25 pt.
8
1-5
How do you calculate the momentum of an object?
5 pt.
9
1-5A
How do you calculate the momentum of an object?
Momentum Mass x Velocity
5 pt.
10
1-10
True or False? Momentum is a vector quantity.
10 pt.
11
1-10A
True or False? Momentum is a vector quantity.
True
10 pt.
12
1-15
What is the momentum of a 0.520-kg object moving
at a velocity of 14 m/s?
15 pt.
13
1-15A
What is the momentum of a 0.520-kg object moving
at a velocity of 14 m/s?
Momentum Mass x Velocity p mv (0.520
kg)(14 m/s) p 7.28 kg m/s
15 pt.
14
1-20
Which of the following objects has the greatest
Momentum?

1. a .22-caliber bullet fired from a rifle
2. a bus speeding along a highway
3. a sprinter running the 100-yard dash
4. the Earth in its orbit
5. not enough info to answer

20 pt.
15
1-20A
Which of the following objects has the greatest
Momentum?

1. a .22-caliber bullet fired from a rifle
2. a bus speeding along a highway
3. a sprinter running the 100-yard dash
4. the Earth in its orbit
5. not enough info to answer

20 pt.
16
1-25
What is the total momentum of the following
situation? Assume there is no friction.
1.5 m/s
0.8 m/s
2 kg
3 kg
25 pt.
17
1-25A
What is the total momentum of the following
situation? Assume there is no friction.
1.5 m/s
0.8 m/s
2 kg
3 kg
Momentum of LH-cart (2 kg)(1.5 m/s) 3 kg
m/s Momentum of RH-cart (3 kg)(- 0.8 m/s) -
2.4 kg m /s Total Momentum 3 kg m/s 2.4 kg
m/s 0.6 kg m/s
25 pt.
18
2-5
An impulse is equal to which of the
following? A) force times distance B) force of
impact C) change in kinetic energy D) change in
momentum E) none of these
5 pt.
19
2-5A
An impulse is equal to which of the
following? A) force times distance B) force of
impact C) change in kinetic energy D) change in
momentum E) none of these
5 pt.
20
2-10
If a boxer wishes to reduce the force of impact
from an incoming punch, what should they do to
the time of impact?
10 pt.
21
2-10A
If a boxer wishes to reduce the force of impact
from an incoming punch, what should they do to
the time of impact?
Increase the time of impact
10 pt.
22
2-15
What is the change in momentum of a soccer ball
that is kicked with a force of 75-N over a time
of 0.18 seconds?
15 pt.
23
2-15A
What is the change in momentum of a soccer ball
that is kicked with a force of 75-N over a time
of 0.18 seconds?
Change in momentum impulse F t F t (75
N)(0.18 s) F t 13.5 N s
15 pt.
24
2-20
A Mack truck and bug are traveling towards one
another when they collide head-on. Which one
experiences the greater impulse? A) the Mack
truck B) the bug C) they both experience the
same impulse D) not enough info
20 pt.
25
2-20A
A Mack truck and bug are traveling towards one
another when they collide head-on. Which one
experiences the greater impulse? A) the Mack
truck B) the bug C) they both experience the
same impulse D) not enough info
20 pt.
26
2-25
A 1,000 kg rocket is launched from rest to a
speed of 2500 m/s in a time of 2.5 minutes. What
was the average force (in Newtons) exerted on the
rocket?
25 pt.
27
2-25A
A 1,000 kg rocket is launched from rest to a
speed of 2500 m/s in a time of 2.5 minutes. What
was the average force (in Newtons) exerted on the
rocket?
Change in momentum Impulse ?m v F t gt F
m (vf vi) / t F (1000 kg)(2500 m/s - 0 m/s
)/(150 s) F 16,667 N
25 pt.
28
3-5
True or False? Momentum is conserved in all
kinds of collisions.
5 pt.
29
3-5A
True or False? Momentum is conserved in all
kinds of collisions.
True
5 pt.
30
3-10
Which kind of collision conserves both momentum
and kinetic energy? A) elastic B)
inelastic C) both D) neither
10 pt.
31
3-10A
Which kind of collision conserves both momentum
and kinetic energy? A) elastic B)
inelastic C) both D) neither
10 pt.
32
3-15
Why is it safer to stop an out-of-control car by
running into a pond versus hitting a concrete
wall?
15 pt.
33
3-15A
Why is it safer to stop an out-of-control car by
running into a pond versus hitting a concrete
wall?
By running into the pond, the time it takes the
car to slow down to a stop is lengthened.
Therefore the stopping force is decreased.
15 pt.
34
3-20
Why is it that a bouncing collision is more
damaging than a sticking collision (assuming the
same time of impact in each case)?
20 pt.
35
3-20A
Why is it that a bouncing collision is more
damaging than a sticking collision (assuming the
same time of impact in each case)?
A bouncing collision is more damaging because the
change in velocity, and therefore the change in
momentum, is greater. This leads to a larger
force.
20 pt.
36
3-25
A 0.25 kg ball is hit by a stick - the incoming
velocity of the ball is 25 m/sec and the
outgoing velocity is - 20 m/sec. If the time of
contact is 0.078 sec, what was the force of
impact?
25 pt.
37
3-25A
A 0.25 kg ball is hit by a stick - the incoming
velocity of the ball is 25 m/sec and the
outgoing velocity is - 20 m/sec. If the time of
contact is 0.078 sec, what was the force of
impact?
Impulse Change in Momentum F t m ?v gt F
m (vf vi) / t F (0.25 kg)(-20 m/s - 25
m/s)/(0.078 s) F -144.2 N
25 pt.
38
4-5
When an asteroid collides with the Moon, the
Moon drastically changes the momentum of the
asteroid. By how much does the Moon change
its momentum?
5 pt.
39
4-5A
When an asteroid collides with the Moon, the
Moon drastically changes the momentum of the
asteroid. By how much does the Moon change
its momentum?
Precisely the same amount
5 pt.
40
4-10
A firecracker is sitting on the ground when it is
lit. After the explosion, what is the total
momentum of the pieces flying away?
10 pt.
41
4-10A
A firecracker is sitting on the ground when it is
lit. After the explosion, what is the total
momentum of the pieces flying away?
Zero!!! because the momentum of the firecracker
before the explosion was zero, and momentum must
be conserved.
10 pt.
42
4-15
A bullet is fired from a heavy rifle. Two
questions Which one experiences a greater
change in momentum? Which one experiences a
greater change in velocity?
15 pt.
43
4-15A
A bullet is fired from a heavy rifle. Two
questions Which one experiences a greater
change in momentum? Which one experiences a
greater change in velocity?
NIETHER!!! They are the same.
The Bullet.
15 pt.
44
4-20
Two billiard balls collide elastically on a table
as shown below. Which picture best represents
the motion of ball 2 after the collision?
2
B
A
C
Bonk!
1
1
20 pt.
45
4-20A
Two billiard balls collide elastically on a table
as shown below. Which picture best represents
the motion of ball 2 after the collision?
2
B
A
C
Bonk!
1
1
20 pt.
46
4-25
Your Team may wager from 0-50 pts.
Type Question Here
You must make your wager BEFORE the Daily Double
is revealed!!!
25 pt.
47
4-25A
Daily Double
Daily Double
Momentum of LH-cart (3 kg)(2.5 m/s) 7.5 kg
m/s Momentum of RH-cart (2 kg)(-1.8 m/s) -3.6
kg m/s Total Momentum 3.9 kg m/s After
collision gt 3.9 kg m/s (5 kg)v v (3.9 kg
m/s)/(5 kg) 0.78 m/s
Daily Double
48
5-5
How many triangles are there in this figure?
5 pt.
49
5-5A
35
5 pt.
50
5-10
Name the actor and movie that produced this
famous quote Boards dont hit back.
10 pt.
51
5-10A
Bruce Lee, in Enter the Dragon
10 pt.
52
5-15
The word Hamster means what in German? A)
Bacon Mix B) Hoarder C) Rodent D) Nocturnal
15 pt.
53
5-15A
The word Hamster means what in German? A)
Bacon Mix B) Hoarder C) Rodent D) Nocturnal
15 pt.
54
5-20
As of early 2008, what is the smallest commercial
car in the United States?
20 pt.
55
5-20A
The Smart Car
20 pt.
56
What California gold-rush entrepreneur used his
knowledge of bouncing collisions to design a
nearly 90 efficient water wheel?
50points!
25 pt.
57
5-25A
Lester A. Pelton, inventor of the Pelton water
wheel
25 pt.
58
Daily Double
Daily Double
Daily Double
Two carts collide and stick together as shown
above. What is the velocity of the carts after
theyve collided? Assume there is no friction.
Daily Double
Daily Double