### If the block is sliding down the rough ramp at a constant speed,

```If the block is sliding
down the rough
ramp at a constant
speed,
ve
.
0%
ab
o
th
e
of
on
e
fr
i
no
is
e
th
er
N
ct
io
n
on
ct
i
of
fr
i
fo
rc
e
0%
...
po
i
po
i
on
ct
i
of
fr
i
th
e
fo
rc
e
th
e
0%
nt
...
n.
.
0%
fo
rc
e
A. the force of friction points
parallel and up the ramp.
B. the force of friction points
parallel and down the
ramp.
C. there is no friction force
since the motion is at a
constant speed.
D. None of the above.
If the block is sliding
down the rough
ramp at an increasing
speed,
ve
.
0%
ab
o
th
e
of
on
e
fr
i
no
is
e
th
er
N
ct
io
n
on
ct
i
of
fr
i
fo
rc
e
0%
...
po
i
po
i
on
ct
i
of
fr
i
th
e
fo
rc
e
th
e
0%
nt
...
n.
.
0%
fo
rc
e
A. the force of friction points
parallel and up the ramp.
B. the force of friction points
parallel and down the
ramp.
C. there is no friction force
since the motion is at a
constant speed.
D. None of the above.
If the block is sliding
up the rough ramp at
an increasing speed,
ve
.
0%
ab
o
th
e
of
on
e
fr
i
no
is
e
th
er
N
ct
io
n
on
ct
i
of
fr
i
fo
rc
e
0%
...
po
i
po
i
on
ct
i
of
fr
i
th
e
fo
rc
e
th
e
0%
nt
...
n.
.
0%
fo
rc
e
A. the force of friction points
parallel and up the ramp.
B. the force of friction points
parallel and down the
ramp.
C. there is no friction force
since the motion is at a
constant speed.
D. None of the above.
If the block is sliding
up the rough ramp at
an increasing speed,
ve
.
0%
ab
o
th
e
of
on
e
fr
i
no
is
e
th
er
N
ct
io
n
on
ct
i
of
fr
i
fo
rc
e
0%
...
po
i
po
i
on
ct
i
of
fr
i
th
e
fo
rc
e
th
e
0%
nt
...
n.
.
0%
fo
rc
e
A. the force of friction points
parallel and up the ramp.
B. the force of friction points
parallel and down the
ramp.
C. there is no friction force
since the motion is at a
constant speed.
D. None of the above.
If the block is
motionless on the
rough ramp, then
ve
.
0%
ab
o
th
e
of
on
e
fr
i
no
is
e
th
er
N
ct
io
n
on
ct
i
of
fr
i
fo
rc
e
0%
...
po
i
po
i
on
ct
i
of
fr
i
th
e
fo
rc
e
th
e
0%
nt
...
n.
.
0%
fo
rc
e
A. the force of friction points
parallel and up the ramp.
B. the force of friction points
parallel and down the
ramp.
C. there is no friction force
since the motion is at a
constant speed.
D. None of the above.
As shown in Figure A, a block of mass m is
hanging from a spring attached to the
ceiling. As shown in Figure B, two blocks of
mass m/2 are hanging from two strings
that are attached to a spring that has the
same spring constant k. If the spring in
Figure A is stretched a distance d, how far
will the spring in Figure B stretch?
0%
0%
on
e
of
th
e
ab
o
ve
4d
0%
N
0%
d/
4
0%
d/
2
0%
2d
D
2d
d/2
d/4
4d
None of the above
D
A.
B.
C.
D.
E.
F.
```