Sharon is driving on a straight road. She is driving north, and her speed is decreasing. If north is the positive direction, which of the following statements is accurate?

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter2: Motion In One Dimension
Section2.1: Displacement, Velocity, And Acceleration
Problem 2.2QQ: True or False? (a) A car must always have an acceleration in the same direction as its velocity. (b)...
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Sharon is driving on a straight road. She is driving north, and her speed is decreasing.
If north is the positive direction, which of the following statements is accurate?
O Her velocity is negative, and her acceleration is negative.
O Her velocity is positive, and her acceleration is positive.
O Her velocity is positive, and her acceleration is negative.
O Her velocity is negative, and her acceleration is positive.
Transcribed Image Text:Sharon is driving on a straight road. She is driving north, and her speed is decreasing. If north is the positive direction, which of the following statements is accurate? O Her velocity is negative, and her acceleration is negative. O Her velocity is positive, and her acceleration is positive. O Her velocity is positive, and her acceleration is negative. O Her velocity is negative, and her acceleration is positive.
Paul is a physicist, observing the movement of a charged particle. The particle is
moving in a straight line along the y-axis of an x-y plane. Its initial velocity was -3
m/s, and its final velocity was 6 m/s. At the end of Paul's observation, the particle's
displacement was 3.75 meters in the positive direction. How long was Paul observing
the particle's motion?
O5.6 seconds
4.2 seconds
O2.5 seconds
O1.2 seconds
Transcribed Image Text:Paul is a physicist, observing the movement of a charged particle. The particle is moving in a straight line along the y-axis of an x-y plane. Its initial velocity was -3 m/s, and its final velocity was 6 m/s. At the end of Paul's observation, the particle's displacement was 3.75 meters in the positive direction. How long was Paul observing the particle's motion? O5.6 seconds 4.2 seconds O2.5 seconds O1.2 seconds
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