Q1/ Show that expression v=v,+at is dimensionally correct, where v and vo represent velocities and a is acceleration and t represents time. Q2/ The change in position for any "round trip" is zero by definition. Find the average velocity for any round trip. Q3/A particle moving along the x-axis has its motion described by the equation v=2t°-2t,where v is in meters/second and t in seconds. Find the acceleration of the object in the x- direction at time t =2.0 seconds. Q4/ (a) An electron in a television tube travels the 16-cm distance from the grid to the screen at an average speed of 4.0 × 10' m/s. How long does the trip take? (b) An electron in a current-carrying wire travels at an average speed of 4.0 x 10³ m/s. How long does it take to travel 16 cm? Q5/ You throw a beanbag in the air and catch it 2.2 s later at the same place at which you threw it. a. How high did it go? b. What was its initial velocity? Q6/A weather balloon is floating at a constant height above Earth when it releases a pack of instruments. a. If the pack hits the ground with a downward velocity of -73.5 m/s, how far did the pack fall? b. Calculate the distance the ball has rolled at the end of 2.2 s. Q7/ In a moment of rage, you throw your physics book as high into the air as you can. What is the book's velocity when the book is at its highest possible point? What is the book's acceleration at this point? Q8/ Compare the displacement of an object dropped during its first second with its displacement after 3 seconds. Q9/ What is the average velocity over the "round trip" of an object that is launched straight up from the ground and falls straight back down to the ground? Q10/ A 10 [kg] object is dropped from rest. a. How far will it drop in 2 s ?

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
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Q1/ Show that expression v=v,+at is dimensionally correct,
where v and vo represent velocities and a is acceleration andt represents
time.
Q2/ The change in position for any "round trip" is zero by definition. Find
the average velocity for any round trip.
Q3/A particle moving along the x-axis has its motion described by the
equation v=2t'-2t,where v is in meters/second and t in seconds. Find the
acceleration of the object in the x- direction at time t =2.0 seconds.
Q4/ (a) An electron in a television tube travels the 16-cm distance from the
grid to the screen at an average speed of 4.0 × 107 m/s. How long does the
trip take? (b) An electron in a current-carrying wire travels at an average
speed of 4.0 x 105 m/s. How long does it take to travel 16 cm?
Q5/ You throw a beanbag in the air and catch it 2.2 s later at the same
place at which you threw it. a. How high did it go? b. What was its initial
velocity?
Q6/A weather balloon is floating at a constant height above Earth when it
releases a pack of instruments. a. If the pack hits the ground with a
downward velocity of -73.5 m/s, how far did the pack fall?
b. Calculate the distance the ball has rolled at the end of 2.2 s.
Q7/ In a moment of rage, you throw your physics book as high into the air
as you can. What is the book's velocity when the book is at its highest
possible point? What is the book's acceleration at this point?
Q8/ Compare the displacement of an object dropped during its first second
with its displacement after 3 seconds.
Q9/ What is the average velocity over the "round trip" of an object that is
launched straight up from the ground and falls straight back down to the
ground?
Q10/ A 10 [kg] object is dropped from rest. a. How far will it drop in 2 s ?
Transcribed Image Text:Homework Q1/ Show that expression v=v,+at is dimensionally correct, where v and vo represent velocities and a is acceleration andt represents time. Q2/ The change in position for any "round trip" is zero by definition. Find the average velocity for any round trip. Q3/A particle moving along the x-axis has its motion described by the equation v=2t'-2t,where v is in meters/second and t in seconds. Find the acceleration of the object in the x- direction at time t =2.0 seconds. Q4/ (a) An electron in a television tube travels the 16-cm distance from the grid to the screen at an average speed of 4.0 × 107 m/s. How long does the trip take? (b) An electron in a current-carrying wire travels at an average speed of 4.0 x 105 m/s. How long does it take to travel 16 cm? Q5/ You throw a beanbag in the air and catch it 2.2 s later at the same place at which you threw it. a. How high did it go? b. What was its initial velocity? Q6/A weather balloon is floating at a constant height above Earth when it releases a pack of instruments. a. If the pack hits the ground with a downward velocity of -73.5 m/s, how far did the pack fall? b. Calculate the distance the ball has rolled at the end of 2.2 s. Q7/ In a moment of rage, you throw your physics book as high into the air as you can. What is the book's velocity when the book is at its highest possible point? What is the book's acceleration at this point? Q8/ Compare the displacement of an object dropped during its first second with its displacement after 3 seconds. Q9/ What is the average velocity over the "round trip" of an object that is launched straight up from the ground and falls straight back down to the ground? Q10/ A 10 [kg] object is dropped from rest. a. How far will it drop in 2 s ?
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