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+ -11 points SerPSET9 4.P.013.MI.
My Notes + Ask Your Teacher
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is 1.18 m. The mug slides off the counter and strikes the floor 0.60
m from the base of the counter.
(a) With what velocity did the mug leave the counter?
m/s
(b) What was the direction of the mug's velocity just before it hit the floor?
(below the horizontal)
4.
+ -/1 points SerPSET9 4.P.007.
The vector position of a particle varies in time according to the expression " = 5.00 î - 5.4042 where ř is in meters and t is in seconds.
(a) Find an expression for the velocity of the particle as a function of time. (Use any variable or symbol stated above as necessary.)
m/s
(b) Determine the acceleration of the particle as a function of time. (Use any variable or symbol stated above as necessary.)
aa
m/s2
(c) Calculate the particle's position and velocity at t = 3.00 s.
F=
m
m/s
3.
+ -12 points SerPSET9 4.P.006.
A particle initially located at the origin has an acceleration of ã = 1.009 m/s2 and an initial velocity of 7; = 7.00î m/s.
(a) Find the vector position of the particle at any time t (where t is measured in seconds).
(
tî +
Z î) m
(b) Find the velocity of the particle at any time t.
(
+
tî) m/s
(c) Find the coordinates of the particle at t = 1.00 s.
X =
m
y =
m
(d) Find the speed of the particle at t = 1.00 s.
m/s
1.
+ -/1 points SerPSET9 4.P.001.
My Notes + Ask Your Teacher
A motorist drives south at 24.0 m/s for 3.00 min, then turns west and travels at 25.0 m/s for 3.00 min, and finally travels northwest at 30.0 m/s for 1.00 min. For this 7.00
min trip, find the following values. Let the positive x axis point east.
(a) total vector displacement
m (magnitude)
south of west
(b) average speed
m/s
(c) average velocity
m/s (magnitude)
o south of west
2.
+ -/1 points SerPSET9 4.P.002.
My Notes
+ Ask Your Teacher
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.65 m/s at 63.0° below the horizontal. Calculate the speed of its shadow on the
level ground.
m/s
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