COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 2, Problem 36QAP
To determine
Average velocity of the ball
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A car stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by xt=bt²-ct³ where, b=2.40m/s² and c=0.120m/s³
A) Calculate the average velocity of the car for the time interval t=0s to t=10.0s
B) Calculate the instantaneous velocity of the car at t=0s; t=5.0s; and t=10.0s
Q2) find the velocity v if a particle s position at time t is (s=180 t -16 t²), when
does the velocity vanished?
a) V=180 t – 32, t=6.534 sec.
b) V= 180 t – 16 t2, t=2.576 sec.
c) V= 180 -32t , t=5.625 sec
University Physics 1 - Kinematics;
Can an object have a velocity with zero acceleration? Can an object have acceleration with zero velocity? Explain why or why not.
Chapter 2 Solutions
COLLEGE PHYSICS
Ch. 2 - Prob. 1QAPCh. 2 - Prob. 2QAPCh. 2 - Prob. 3QAPCh. 2 - Prob. 4QAPCh. 2 - Prob. 5QAPCh. 2 - Prob. 6QAPCh. 2 - Prob. 7QAPCh. 2 - Prob. 8QAPCh. 2 - Prob. 9QAPCh. 2 - Prob. 10QAP
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- If the velocity of an object is nonzero, can its acceleration be zero?Give an example if your answer is yes; explain why not if your answer is no.arrow_forwardEXAMPLE 5 Studying Particle Motion A particle moves along a line so that its position at any time tz 0 is given by the func- tion s(t) = r – 41 + 3, where s is measured in meters and t is measured in seconds. (a) Find the displacement of the particle during the first 2 seconds. (b) Find the average velocity of the particle during the first 4 seconds. (e) Find the instantaneous velocity of the particle when t = 4. (d) Find the acceleration of the particle when 1 = 4. (e) Describe the motion of the particle. At what values of t does the particle change directions? (1) Use parametric graphing to view the motion of the particle on the horizontal line y = 2.arrow_forwardLinear Kinematics Equations (constant acceleration) The head of a woodpecker is moving forward at a speed of 7.49 m/s when the beak makes first contact with a tree limb. The beak stops after penetrating the limb by 1.87mm. Assuming the acceleration to be constant, find the acceleration in terms of garrow_forward
- Short computation The velocity of an object as a function of time is given by v(t) = b = ct- et²2, where v and t are in SI units. The other variables are given as b = 4.1 m/s, c = 4.1 m/s², and e = 1.5 m/s³. Determine the instantaneous acceleration of the object at time t = 0.38 s. a m/s² Remember to include a "-" if the acceleration turns out to be negative. Do not include a "+" for a positive value. Report your numerical answer below, assuming three significant figures.arrow_forwardCan an object have an acceleration of zero and a velocity that is not zero? Explain why or give an example. Can an object have a velocity of zero and an acceleration that is not zero? Explain why or give an example.arrow_forwardQuestion #8 Jackson heads east at 25 km/h for 20 minutes before heading south at 45 km/h for 20 minutes. Hunter heads south at 45 km/h for 10 minutes before heading east at 25 km/h for 30 minutes. Which driver has the greater average velocity, if either? a) Jackson b) Hunter c) They both have the same average velocity YO / YO-YEarrow_forward
- ² = ₁ + 2 as 0 = (6)² + 2 ×a× 24 = -0.75 m s² Acceleration is negative because the velocity decreases with time. a Example (5) A car starting from rest travels with a uniform acceleration of 2 m s² in the first 6 s. It then travels with a constant velocity for half an hour. Find the distance travelled in the first 6 s as well as the distance travelled in the following half an hour.arrow_forwardCan you have a positive or negative velocity but a position with the opposite value (negative or positive)? Explain why or why not. (Explain clear and not too hard to understand) Can you have zero velocity but a positive or negative position? Give an easy example.arrow_forwardLinear Motion A car goes from 0 m/s to 80 m/s south in 8 seconds along a flat road. (a) What is the magnitude of its average acceleration for the first 8 seconds? (b) Assuming a constant acceleration, a, what is its average speed for the first 8 seconds? (c) How far did it travel in the first 8 seconds? A car's velocity goes from +24 m/s to -20 m/s at a constant acceleration, à, in 10 seconds along a flat straight road. (a) What is its change in velocity? (b) What is its average acceleration, à, for these 10 seconds? (c) What is its average velocity for these 10 s? (d) What was its displacement, A, for these 10 s? (e) Assuming that t = 0 s when the car is going +24 m/s at the beginning of the 10 s interval, at what time did the car stop moving? (f) What distance, Ax, did it travel in these 10 seconds? (g) What was its average speed in the first 10s?arrow_forward
- Problem 6 A car is stopped at a traffic light. It then travels along a straight road such that its distance from the light is given by x(t) = bt -c t, where b = 2.4 m/s? and c = 0.120 m/s. %3D %3D a) Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s. b) Calculate the instantaneous velocity of the car at t = 0, t = 5.0 s, and t = 10.0 s. c) How long after starting from rest is the car at rest again? a) VAve 12 m/s %3D b) v, m/s t, sec 0.0 5.0 15 10.0 12 c) t = 13.3 sarrow_forwardExample 3 • A particle moves along the x-axis so that at any t≥ 0 its velocity is given by v(t) = t² - 16t+4. What is the velocity of the particle when its acceleration is zero.arrow_forward4 -Analyzing a graph(a) For the position–time graph shown, explain whether the object being described has uniform or non-uniform velocity.(b) From the graph, determine whether the object’s velocity is positive or negative and how it ischanging.arrow_forward
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Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY