COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 3, Problem 19QAP
To determine
The direction of acceleration of the particle in projectile motion is:
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If you know the position vectors of a particle at two points along its path and also know the time it took to get from one point to the other, can you determine the particle’s instantaneous velocity? Its average velocity? Explain.
y
X
A projectile is fired up at t=0 with an initial speed vo at an angle 0 with respect to
the horizontal axis. One second after it is shot, velocity vector of the particle is i =
10î + 20j m/s. After a few seconds, it strikes the ground again. Which of the
followings is the maximum height that it reaches?
A) 15 m B) 25 m C)35 m D) 40m E) 45 m
a) Which particle follows the smaller circle, b) does the particle travel clockwise or counterclockwise? Please explain.
Chapter 3 Solutions
COLLEGE PHYSICS
Ch. 3 - Prob. 1QAPCh. 3 - Prob. 2QAPCh. 3 - Prob. 3QAPCh. 3 - Prob. 4QAPCh. 3 - Prob. 5QAPCh. 3 - Prob. 6QAPCh. 3 - Prob. 7QAPCh. 3 - Prob. 8QAPCh. 3 - Prob. 9QAPCh. 3 - Prob. 10QAP
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- • From ta = -25 s until to = -15 s the plane is taxiing east along the runway at a constant speed of 4 m/s. From ts until te = -10 s the plane slows down at a constant rate and comes to rest. • From te until to =0 the plane turns around, turning nearly in place so that by to it is facing west. • At to = 0 the plane is near the east end of the runway, at rest. From to until ti = 5.0 s it speeds up with a constant acceleration going west. At t, it is going at a speed of 8.75 m/s. • After t, the plane continues speeding up, but at a steadily reducing rate (i.e. it is still speeding up, but the magnitude of its acceleration is decreasing). It lifts off at t2 = 65 s going at a speed of 85 m/s, having gone a distance of 2980 m down the runway. • From t2 until t3 = 240 s the plane is climbing at an angle of 5.0° above horizontal, speeding up at a constant rate. At t3 it is going at a speed of 230 m/s. • At t3 the plane levels off, so it is flying at a constant height. From t3 until ta = 270 s…arrow_forwardWhich of the following objects is undergoing uniform circular motion> a. An object speeding up at a constant rate while following a circular path. b. An object whose velocity is changing at a constant rate in a given direction. c. An object undergoing acceleration with a constant magnitude directed towards the centre of its circular path. d. An object that is traveling at constant speed around a circular path.arrow_forwardSuppose two vectors have unequal magnitudes. Can their sum be 0→?Explain.arrow_forward
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