File - Melrose Science

Name:
Class Period:
Physical Science Packet 6.1
Momentum
Test and Packet Due on Fri 3/27!
Tutoring: Wed-Fri 3:20-4:20
Questions? Text or Email Mr. Barnhart
901-654-7797
[email protected]
barnhartmelrose.weebly.com
Learning Targets
Monday: I can
.
Tuesday: I can
.
Wednesday: I can
.
Thursday: I can
.
Friday: I can dominate the quiz.
Conceptual Questions: [COMPLETE sentences with SPECIFIC LANGUAGE. Do NOT abbreviate (d, a, si, sf, …) or use “it,” “this” …etc]*
A1.
Write the symbol AND name of the quantity described
a.
how fast an object is moving
b.
how far an object moved
c.
describes how fast and what direction an object is moving
d.
how much an object’s velocity changes each second
e.
how long (seconds) an object was moving
f.
how much “stuff” (protons, neutrons, electrons) an object is made of
g.
extra force in a direction
h.
pull by a rope, string, cable…etc
i.
gravitational pull of the earth
j.
resistive force due to moving across a surface
k.
measurement of the roughness of surfaces (difficulty for sliding)
l.
active push along surface (with velocity)
m. active push along a surface to cause turning
n.
active push off the air
o.
resistive force due to moving through air
p.
force due to contact with a hand, ground … etc
q.
a force’s ability to cause rotation
r.
length from the center or rotation point
s.
product of mass and velocity (determines the outcome of a collision)
t.
transfer of momentum (product of force & time)
s
speed
Name:
Class Period:
A2. In head-on collision, how we predict who will win?
A3. When two objects are moving together we can think of them as one object. What do we write for the mass?
A4. What does conservation of momentum mean?
A5. Under what circumstances is the momentum of a system conserved?
A6. A small car and a large truck collide! (fill in the blank with car, truck or same)
a.
For which vehicle will the impact time be greater? Why?
b.
Which vehicle experiences the greater impact force? Why? [Justify your answer with one of Newton’s Laws]
c.
Which vehicle experiences the greater change in momentum? Why?
d.
Which vehicle experiences the greater acceleration? Why? [Justify your answer with one of Newton’s Laws]
e.
Which vehicle is more dangerous to be inside? Why?
B.
Who will win!? / Definition of Momentum:
Two vehicles collide inelastically, sticking together after the collision.
Determine who will “win” the collision. The winner is the vehicle that
continues in the same direction after the collision. Also draw motion
lines on the “after” picture.
B1.
Who will win?
2K
B2.
on
4K
zero
on
(write A, B or tie)
B
9mph
10K
zero
Who will win?
(write A, B or tie)
A
on
B
A
20mph
35mph
15mph
?
?
A
B3.
B
B
A
Who will win?
B4.
Who will win?
(write A, B or tie)
(write Patriots, Seahawks or tie)
New England
Patriots
Seattle
Seahawks
(Tom Brady)
A
(Richard Sherman)
B
4mph
20mph
175 lbs
12 mph
?
?
A
200 lbs
8 mph
B
zero
B5.
Who will win?
B6.
Who will win?
(write A, B or tie)
A
(write A, B or tie)
B
A
50mph
A
28mph
B
A
50mph
28mph
?
?
A
B7.
B
A
Who will win?
A
tie
(write A, B or tie)
B8.
B
A
Who will win?
tie
(write A, B or tie)
What is the mass
of the package?
______
How fast was car
A traveling?
______
?
B
A
15mph
A
B
30mph
25mph
rest!
rest!
?
A
B
A
B
C:
Conservation of Momentum [part 1: Simple]
C1.
C2.
ptotal =
p = 60 K mph
ptotal =
p = 50 K mph
p = 20 K mph
p =
?
?
p=
C3.
p = 30 K mph
p = 30 K mph
C4.
ptotal =
p = 60 lb mph
p =
ptotal =
p = 8 kg m/s
p=
?
p=
C5.
p =
?
p = 10 lb mph
p=
C6.
ptotal =
p = 6 kg m/s
ptotal =
?
?
A
p=
B
p = 5 kg m/s
p =
p =
A
p = 3 kg m/s
p = 30 K mph
p = 10 K mph
B
p = 6 kg m/s
[part 2: Changing directions!]
C7.
C8.
ptotal =
A
p =
ptotal =
B
5 kg m/s
A
p =
p =
B
5 kg m/s
p =
?
?
A
B
p = 1 kg m/s
C9.
B
p = 2kg m/s
p =
C10.
ptotal =
p = 100 K mph
A
p =
p =
ptotal =
p = 60 lb mph
p =
?
?
p = 10 lb mph
p=
C11.
p=
p = 120 K mph
C12.
ptotal =
p = 2,000 lb mph
p = 2,500 lb mph
ptotal =
p = 2,000 lb mph
p = 2,500 lb mph
?
?
p = 300 lb mph
p =
p=
p = 100lb mph