Physics Fundamentals
2nd Edition
ISBN: 9780971313453
Author: Vincent P. Coletta
Publisher: PHYSICS CURRICULUM+INSTRUCT.INC.
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 2, Problem 6P
(a)
To determine
The average acceleration of the car at
(b)
To determine
The instantaneous acceleration of the car at
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
An object moves along the x axis according to the equation x =
3.85t?
2.00t + 3.00, where x is in meters and t is in seconds.
(a) Determine the average speed between t = 2.10 s and t = 4.10 s.
13
The average speed is the distance traveled divided by the time. Is the distance traveled equal to the displacement in this case? m/s
(b) Determine the instantaneous speed at t = 2.10 s.
m/s
Determine the instantaneous speed at t = 4.10 s.
m/s
(c) Determine the average acceleration between t = 2.10 s and t = 4.10 s.
m/s²
(d) Determine the instantaneous acceleration at t = 2.10 s.
m/s²
Determine the instantaneous acceleration at t = 4.10 s.
m/s?
(e) At what time is the object at rest?
S
A person on a road trip drives a car at different constant speeds over several legs of the trip. She drives for 15.0 min at 50.0 km/h,
8.0 min at 80.0 km/h, and 30.0 min at 35.0 km/h and spends 25.0 min eating lunch and buying gas.
(a) What is the total distance traveled over the entire trip (in km)?
km
(b) What is the average speed for the entire trip (in km/h)?
km/h
A proton (mass m = 1.67 x 10-27 kg) is being accelerated along a straight line at 2.20 x 1015 m/s² in a machine. The proton has an initial speed of 2.00 x 107 m/s and travels 4.1 cm.
(a) What is its speed? (Give your answer to at least four significant figures.)
m/s
Chapter 2 Solutions
Physics Fundamentals
Ch. 2 - Prob. 1QCh. 2 - Prob. 2QCh. 2 - Prob. 3QCh. 2 - Prob. 4QCh. 2 - Prob. 5QCh. 2 - Prob. 6QCh. 2 - Prob. 7QCh. 2 - Prob. 8QCh. 2 - Prob. 9QCh. 2 - Prob. 1P
Ch. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The distance s(t), in meters, is given as a function of time, in seconds, below. s(t)=t^5−2/t+ln(9t) Find the velocity function and evaluate at t=2 seconds. Answer in the form: v(t)=At^4+2t^B+t^−1. A= B= v(2)= Find the acceleration function and evaluate at t=1 second. Answer in the form: a(t)=Ct^3+Dt^−3−t^−2. C= D= a(1)=arrow_forwardA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 20.0 min at 70.0 km/h, 6.0 min at 85.0 km/h, and 60.0 min at 50.0 km/h and spends 40.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the initial and final cities along the route. kmarrow_forwardStarting from rest, a bus leaves a gas station with a constant acceleration of 2 m/s˄2 until it reaches a speed of 10 m/s. The bus then continues to move with this speed (10 m/s) for 5 s. Then the bus decelerates at 2.5 m/s˄2 until it stops. What is the total distance traveled by the bus? (Answer: 95 m) Give the solution for this.(given, solution)arrow_forward
- A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 15.0 min at 60.0 km/h, 16.0 min at 80.0 km/h, and 50.0 min at 45.0 km/h and spends 35.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h (b) Determine the distance between the Initial and final cities along the route. km Need Help? Read I Need Help? MY NOTES ASK YOUR TEACHER A football player runs from his own goal line to the opposing team's goal line, returning to his thirty-yard line, all in 22.Is. Calculate his average speed and the magnitude of his average velocity. (Enter your answers in yards/s.) HINT (a) Calculate his average speed. yards/s (b) Calculate the magnitude of his average velocity. yards/sarrow_forwardA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 40.0 min at 85.0 km/h, 15.0 min at 100.0 km/h, and 55.0 min at 45.0 km/h and spends 20.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. km/h(b) Determine the distance between the initial and final cities along the route. kmarrow_forwardA driver traveling at night on a country road suddenly sees another car pull out into the roadway in front of him.He slams on his brakes and skids for a distance of 72.9 m until he hits the other car. If the driver slowed with constant acceleration of 4.8m/s² for 4.5 s,with what speed would he hit the other car?arrow_forward
- The position of a particle is given by r(t) = (3.0 t2 ˆi+ 5.0 ˆj − 6.0 t ˆk) m. (d) What is its speed at t = 1 s and t = 3 s? (e) What are the average velocity and acceleration between t = 1 s and t = 2 s?arrow_forwardAn auto travels at the rate of 25 km/h for 4.0 minutes, then at 50 km/h for 8.0 minutes, and finally at 20 km/h for 2.0 minutes. Find the average speed for the complete trip in m/s?arrow_forwardA woman drives a car from one city to another with different constant speeds along the trip. She drives at a speed of 70.0 km/h for 20.0 min, 65.0 km/h for 15.0 min, makes a stop for 50.0 min, then continues at 40.0 km/h for 30.0 min, at which point she reaches her destination. (a) What is the total distance between her starting point and destination (in km)?km(b) What is the average speed for the entire trip (in units of km/h)?km/harrow_forward
- The velocity of an object moving along the x-axis is given in m/s by v(t) = t^2 – 6t + 8, where t is in s. If the object starts from x=1m at t=0s, then what is the acceleration of the object when t = 2 s?arrow_forwardA person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 50.0 km/h, 12.0 min at 60.0 km/h, and 30.0 min at 40.0km/h and spends 55.0 min eating lunch and buying gas. (a) Determine the average speed for the trip.km/h(b) Determine the distance between the initial and final cities along the route. kmarrow_forwardThe acceleration of a particle is a constant. At t = 0 the velocity of the particle is (14.9î + 18.4ĵ) m/s. At t = 3.1 s the velocity is 11.4ĵ m/s. (Use the following as necessa (a) What is the particle's acceleration (in m/s²)? a = -4.81 Î+ -2.28 m/s? (b) How do the position (in m) and velocity (in m/s) vary with time? Assume the particle is initially at the origin. r(t) = v(t) m/sarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Kinematics Part 3: Projectile Motion; Author: Professor Dave explains;https://www.youtube.com/watch?v=aY8z2qO44WA;License: Standard YouTube License, CC-BY