Transcript Tendency to resist changes in motion Mass The

Tendency to resist changes in motion
Mass
The greater the mass, the greater the push
required to get the brick moving.
Yes, she would still feel the sluggishness
Moose would have trouble changing direction
because of its large inertia
d
C
D
A
B
F
F
F
F
F
F
F
F
F
T
T
F
F
F
F
F
Tends to stay at rest
Tends to stay in motion
Acted upon by an unbalanced force
f.
Speeding Up
Constant Velocity
Slowing Down
C
A
B
Constant velocity
10N left
Slowing Down
0
Speeding Up
15N up
Anna - Hovercraft
No – could be slowing down
Newton’s Second Law of Motion
Fnet
a
m
directly
inversely
16
32
4
4
Page 12 in Packet
32
64
16
96
C
Fnet = 20N
Fnet = 0
M = 5 kg
M = 5 kg
a = 4 m/s/s
a=0
A
D
B
Fnet = 30N
Fnet = 15N
M = 5 kg
M = 5 kg
a = 6 m/s/s
a = 3 m/s/s
Down
600 N
60 kg
10 m/s/s
Down
Down
200 N
60 kg
3.33 m/s/s
Down
Left
2000 N
800 kg
2.5 m/s/s
Left
Left
4000 N
800 kg
5 m/s/s
Left
Right
8N
2 kg
4 m/s/s
Right
Right
16 N
M = 4 kg
a = 4 m/s/s
Right
Ball hits bat
Car pushes Man
Bug hits bus
Athlete pushes M.B.
Forward
Foot pushes Floor
Backward
Foot pushes Ball
Forward
M.B pushes Athlete
Backward
Floor pushes Foot
Forward
Ball pushes Foot
Backward
F(Chair)
F(Earth
)
F(person’s mass)
F(stump)
F(Earth)
F(Shirley’ mass) = 600N
equal
greater
equal
greater
equal
less
equal
equal