Answered: A 500 kg vehicle travels with velocity…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A 500 kg vehicle travels with velocity V0 = 10 m/s i. It is struck in the rear by a car so that it then has a velocity of Vf = 12 m/s i. The impact takes 0.5 seconds. The average force acting on the vehicle (in Newtons) is

a. 22000 i b. 10000 i c. 5000 j d. 2000 i9.

The angular position of a point on the rim of a rotating wheel is given by . The ?(?)=?3+2?2+2angular velocity and acceleration of the point at t = 2 s (in rad/s and rad/s2) are

a. 20, 20 b. 18, 20 c. 18, 16 d. 20, 1610.

A wheel is rotating at an angular velocity of rad/s. It comes to rest after rotating 50 radians. ?0= 30The angular acceleration the wheel undergoes (in rad/s2 ) is

a. -3/5 b. -18 c. -9 d. 1500

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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