# Explain ely the velocity and acceleration vectors of

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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 I-9 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° . I-10 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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