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Unformatted text preview: ure P increasingaor decreasing at this instant? Explain.
ely. the velocity and acceleration vectors of P in
eir polar coordinates. eR etch of the velocity and acceleration vectors
P
the rate of change of speed of P.
f P increasing or decreasing at this instant? e! ! R O
˙
¨
Use the following parameters in your analysis: θ = π/2 rad, θ = 3 rad/s and θ = 2 rad/s2 . !
parameters in your analysis: ! = " radians , ! = " 1.5 rad / sec and Chapter I: Particle Kinematics Homework I9 Homework 1.D.1
Given: Automobile A is traveling down a roadway with a speed of vA when it encounters a
hailstorm. Hailstone P is known to be falling with a speed of vP at an angle of θ forward of the
automobile.
Particle Kinematics Homework Problems ME 274 Find: For this problem: • Write down, as a vector, the velocity of P as seen by a passenger in the automobile. Problem I/5
Automobile A is traveling doangle roadway with a speed ofobserved velocity of P? a
• At what wn a with the vertical is this vA when it encounters
hailstorm. Hailstone P is known to be falling with a speed of vP at an angle of ! forward
of the automobile.
a) Write down, as a
vector, the velocity of
P as seen by a
passenger in the
automobile.
b) At what angle with the
vertical is this
observed velocity of P? vP vA ! P A Use the following parameters in your analysis: vA = 40 m/s, vP = 10 m/s and θ = 20◦ . Use the following parameters in your analysis: vA = 20 m / sec , vP = 6 m / sec and
! = 53.13° . I10 Chapter I: Particle Kinematics Homework
Particle Kinematics Homework Problems ME 2 Homework 1.D.2 Problem I/14
Two cars are travelling as shown. Car A is traveling along a circular path of radius, r,
Given: Two cars are travelling as shown. Car A is traveling along a circular path of radius, r,
with a constant speed, v A . Car B is traveling with a speed, v the the positive x axis. Th
, in
with a constant speed, vA . Car B is traveling with a speed, vB , in the direction of B positi...
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 Fall '09

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