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Transcript
A 2.0-kg object moving at 5.0 m/s encounters a 30-Newton resistive force over a duration of 0.10
seconds. The impulse (magnitude only) experienced by this object is approximately ______ Nxs.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
.30
2.0
2.5
3.0
7.0
8.0
10
13
50
100
300
An impulse occurs when a _____ is acting upon an object for a given amount of _____ in order to cause
a change in ____. Enter the letters of the three answers in their respective order.
a.
b.
c.
d.
e.
f.
g.
h.
force
energy
mass
momentum
time
position
acceleration
None of these choices can suitably fill in this blank
True or False
In a collision, the impulse encountered b an object is equal to its momentum change.
A 5.0-kg object moving at 2.0 m/s encounters a 20-Newton resistive force over a duration of 0.2
seconds. The impulse (magnitude only) experienced b this object is approximately____Nxs.
a.
b.
c.
d.
e.
f.
g.
h.
0.40
2.0
4.0
6.0
10
14
50
100
A2.0-kg object moving at 5 m/s encounters a 30-Newton resistive force over a duration of 0.10 seconds
The momentum change (magnitude only) experienced by this object is approximately ____kg x m/s.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
0.30
2.0
2.5
3.0
7.0
8.0
10
13
50
100
300
A 2.0-kg object moving at 5 m/s encounters a 30-Newton resistive force over a duration of 0.10 seconds.
The final momentum of this object is approximately ____kg x m/s.
a. 0.30
b. 2.0
c. 2.5
d. 3.0
e. 7.0
f. 8.0
g. 10
h. 13
i. 50
j.100
k.300
A 5.0-kg object moving at 4.0 m/s encounters a 20-Newton resistive force over a duration of 0.30
seconds. The impulse (magnitude only) experienced by this object is approximately ______ N x s.
a.
b.
c.
d.
0.30
. 0.80
1.0
2.0
e.
f.
g.
h.
i.
j.
k.
6.0
10
13.3
14
20
26
66.7
In a collision, an object experiences an impulse. This impulse causes and is equal to the ____ of the
object.
a.
b.
c.
d.
e.
f.
g.
h.
velocity change
energy change
momentum change
kinetic energy change
momentum
force
velocity
acceleration
Which of the following are the standard metric units of impulse?
a.
b.
c.
d.
e.
f.
g.
h.
i.
Newton x meter
Newton/ second
Newton x second
Newton x second^2
Watt
kilogram x meter/second^2
meter/second^2
Joule
Joule/second
In a collision, an object experiences an impulse. This impulse can be determined by _____. Enter the two
answers in alphabetical order with no commas or spaces between letters.
a.
b.
c.
d.
e.
f.
g.
h.
Dividing the momentum change of the object by the time over which this change occurs
Dividing the force on the object by the mass of the object
Dividing the force on the object by the time over which the force acts
Dividing the force on the object by the acceleration of the object
Multiplying the mass of the object by the velocity change of the object
Multiplying the force on the object by the mass of the object
Multiplying the force on the object by the time over which the force acts
Multiplying the mass of the object by the acceleration of the object
A 5.0-kg object moving at 2.0m/s encounters a 20-Newton resistive force over a duration of 0.2 seconds.
The final momentum of this object is approximately ____kg x m/s.
a.
b.
c.
d.
e.
f.
g.
h.
i.
-2.0
0.40
2.0
4.0
6.0
10
14
50
100
A 6.0-kg object moving at 3.0 m/s encounters a 40-Newton resistive force over a duration of 0.2
seconds. The impulse (magnitude only) experienced by this object is approximately ______ N x s.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
0.444
0.50
2.22
8.0
10
11
15
18
26
90
200