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At t= 0, one toy car is set rolling on a straight track with initial position 14.5 cm, initial velocity -3.6 cm/s, and constant acceleration 2.90 cm/s². At the same moment, another toy car is set rolling on an adjacent track with initial position 8.5 cm, initial velocity 5.10 cm/s, and constant zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.) 3 ✓ S (b) What are their speeds at that time? (Enter NA if the cars never have equal speeds.) 5.1 ✓ cm/s (c) At what time(s), if any, do the cars pass each other? (If there is only one time, enter NA in the second blank. If there are two times, enter the smaller time first. If they never pass, enter NA in both blanks.) 0 The correct answer is not zero. s 2.45 x Your response differs from the correct answer by more than 10%. Double check your calculations. s (d) What are their locations at that time? (If there is only one position, enter NA in the second blank. If there are two positions, enter the smaller position first. If they never pass, enter NA in both blanks.) 12.495 2.005 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. cm cm (e) Explain the difference between question (a) and question (c) as clearly as possible.

At t= 0, one toy car is set rolling on a straight track with initial position 14.5 cm, initial velocity -3.6 cm/s, and constant acceleration 2.90 cm/s². At the same moment, another toy car is set rolling on an adjacent track with initial position 8.5 cm, initial velocity 5.10 cm/s, and constant zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.) 3 ✓ S (b) What are their speeds at that time? (Enter NA if the cars never have equal speeds.) 5.1 ✓ cm/s (c) At what time(s), if any, do the cars pass each other? (If there is only one time, enter NA in the second blank. If there are two times, enter the smaller time first. If they never pass, enter NA in both blanks.) 0 The correct answer is not zero. s 2.45 x Your response differs from the correct answer by more than 10%. Double check your calculations. s (d) What are their locations at that time? (If there is only one position, enter NA in the second blank. If there are two positions, enter the smaller position first. If they never pass, enter NA in both blanks.) 12.495 2.005 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. cm cm (e) Explain the difference between question (a) and question (c) as clearly as possible.

College Physics
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
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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At t = 0, one toy car is set rolling on a straight track with initial position 14.5 cm, initial velocity -3.6 cm/s, and constant acceleration 2.90 cm/s². At the same moment, another toy car is set rolling on an adjacent track with initial position 8.5 cm, initial velocity 5.10 cm/s, and constant zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.) 3 S (b) What are their speeds at that time? (Enter NA if the cars never have equal speeds.) 5.1 cm/s (c) At what time(s), if any, do the cars pass each other? (If there is only one time, enter NA in the second blank. If there are two times, enter the smaller time first. If they never pass, enter NA in both blanks.) 0 The correct answer is not zero. S 2.45 X Your response differs from the correct answer by more than 10%. Double check your calculations. s (d) What are their locations at that time? (If there is only one position, enter NA in the second blank. If there are two positions, enter the smaller position first. If they never pass, enter NA in both blanks.) 12.495 2.005 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. cm cm (e) Explain the difference between question (a) and question (c) as clearly as possible.
Transcribed Image Text:At t = 0, one toy car is set rolling on a straight track with initial position 14.5 cm, initial velocity -3.6 cm/s, and constant acceleration 2.90 cm/s². At the same moment, another toy car is set rolling on an adjacent track with initial position 8.5 cm, initial velocity 5.10 cm/s, and constant zero acceleration. (a) At what time, if any, do the two cars have equal speeds? (Enter NA if the cars never have equal speeds.) 3 S (b) What are their speeds at that time? (Enter NA if the cars never have equal speeds.) 5.1 cm/s (c) At what time(s), if any, do the cars pass each other? (If there is only one time, enter NA in the second blank. If there are two times, enter the smaller time first. If they never pass, enter NA in both blanks.) 0 The correct answer is not zero. S 2.45 X Your response differs from the correct answer by more than 10%. Double check your calculations. s (d) What are their locations at that time? (If there is only one position, enter NA in the second blank. If there are two positions, enter the smaller position first. If they never pass, enter NA in both blanks.) 12.495 2.005 X Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. cm cm (e) Explain the difference between question (a) and question (c) as clearly as possible.
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