#18 and #20 please do, thanks! to solve prob tion.endixe3.2 Motion with Constant Accelerationou have learned that the definition of average velocity can be alge-I braically rearranged to show the new position after a period of time,given the initial position and the average velocity. The definition of averageacceleration can be manipulated similarly to show the new velocity after aperiod of time, given the initial velocity and the average acceleration.-ObjectivesInterpret position-timegraphs for motion withconstant accelerationVelocity with Average AccelerationIf you know an object's average acceleration during a time interval, youcan use it to determine how much the velocity changed during that time.The definition of average acceleration,Determine mathematicalrelationships among positionvelocity, acceleration.and timeApply graphical andmathematical relationshipsto solve problems related toa- A, can be rewritten as follows:constant acceleration.v - v, = āAtThe equation for final velocity with average acceleration can be writtenas follows.reFinal Velocity with Average Acceleration v= v, + āAtThe final velocity is equal to the initial velocity plus the product of theaverage acceleration and time interval.In cases in which the acceleration is constant, the average acceleration,a. is the same as the instantaneous acceleration, a. This equation can berearranged to find the time at which an object with constant accelerationhas a given velocity. It also can be used to calculate the initial velocity of anobject when both the velocity and the time at which it occurred are given.• Additional Problems, Appendix B• Solutions to Selected Problems, Appendix CPRACTICE Problems18. A golf ball rolls up a hill toward a miniature-golf hole. Assume thatthe direction toward the hole is positive.a. If the golf ball starts with a speed of 2.0 m/s and slows at aconstant rate of 0.50 m/s? what is its velocity after 2.0 s?b. What is the golf ball's velocity if the constant accelerationcontinues for 6.0 s?c. Describe the motion of the golf ball in words and with a motiondiagram.19. A bus that is traveling at 30.0 km/h speeds up at a constant rate of3.5 m/s?. What velocity does it reach 6.8 s later?20. If a car accelerates from rest at a constant 5.5 m/s?, how long willit take for the car to reach a velocity of 28 m/s?21. A car slows from 22 m/s to 3.0 m/s at a constant rate of 2.1 m/s.How many seconds are required before the car is traveling at 3.0 m/s?65Section 3.2 Motion with Constant Acceleration

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18. A golf ball rolls up a hill toward a miniature-golf hole. Assume that the direction toward the hole is positive. a. If the golf ball starts with a speed of 2.0 m/s and slows at a constant rate of 0.50 m/s?, what is its velocity after 2.0 s? b. What is the golf ball's velocity if the constant acceleration continues for 6.0 s? c. Describe the motion of the golf ball in words and with a motion diagram.

18. A golf ball rolls up a hill toward a miniature-golf hole. Assume that the direction toward the hole is positive. a. If the golf ball starts with a speed of 2.0 m/s and slows at a constant rate of 0.50 m/s?, what is its velocity after 2.0 s? b. What is the golf ball's velocity if the constant acceleration continues for 6.0 s? c. Describe the motion of the golf ball in words and with a motion diagram.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 69P: A rescue helicopter is hovering over a person whose boat has sunk. One of the rescuers throws a life...

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Can i please get help with. Apologies if this is too many questions at once. Please answer where possible and let me know if i need to post other questions as a seperate questions, thanks ! Draw a vector diagram of Moana’s journey, and find the magnitude of ther displacement from Taiaroa Head et the end of each of the three legs Sketch the speed of the albatross as a function of time during this leg, and identify which features on the graph correspond the bird’s displacement and acceleration. What is her acceleration at time t=1 hr? Your answer can be in units of km hr-2. How long, in hours and minutes, does it take for Moana to complete the third leg?
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ition after 1.0 s. Can le summarizes the is noites) he magnitude nd Eq. 4 with at you are , because e and in becomes What Have I Learned So Far? During volleyball practice, your teammate tosses the ball upward to prepare it for a spike. 1. Compare the relative directions of the ball's velocity and acceleration as it moves and as it moves down (free fall). up 2. Describe how the ball's velocity will change when it is directed opposite from the direction of the acceleration. 3. How will the ball's velocity change when its direction is similar to that of the acceleration? ha Take note that an object's acceleration and velocity are not always in the same direction as discussed earlier. Second, at the top of the ball's path, the velocity is zero, but its acceleration is still the constant g. Example 3: aer dC vt d 11 V = 0 m/s Pg [ vt Pg tv ]d 1800 /v ] Pg
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