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What is the angle between the vectors
A
and
−
A
when they are drawn from a common origin? 180
Town A lies 20 km north of town B. Town C lies 13 km west of town A. A small plane
flies directly from town B to town C. What is the displacement of the plane?
24 km, 57° north of west
A displacement vector is 23 km in length and is directed 65° south of east. What are the
components of this vector? East 9.7 km South 21 km
Vectors: x +15, y+10The vector
A
−
B
has no
x
component.
A 5.0kg rock is dropped from rest down a vertical mine shaft. How long does it take for the rock to reach a depth of 79 m? 4.0 s
What maximum height will be reached by a stone thrown straight up with an initial speed of 35 m/s? 63 m
An 80 N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 30° to the ground.
What is the normal force exerted on the crate by the ramp? 69 N
What is the static frictional force exerted on the crate by the ramp? 40 N
What is the minimum possible value of the coefficient of static friction that will prevent
the crate from sliding? 0.58
A force
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This note was uploaded on 10/27/2009 for the course PHYS 2205 taught by Professor Damazilu during the Fall '08 term at Virginia Tech.
 Fall '08
 DAMazilu
 Physics

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