GENERAL PHYSICS 1
GENERAL PHYSICS 1 PHYS 1110
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This 9 page Class Notes was uploaded by Mrs. Peter Toy on Friday October 30, 2015. The Class Notes belongs to PHYS 1110 at University of Colorado at Boulder taught by Staff in Fall. Since its upload, it has received 12 views. For similar materials see /class/232121/phys-1110-university-of-colorado-at-boulder in Physics 2 at University of Colorado at Boulder.
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Date Created: 10/30/15
CT3 1 Test your transmitter by answering this question Find the nearest receiver that is pointing at you Double check your transmitter ID The solid line has length A and makes an angle 9 with the negative yaXis What is the length of the dotted line y A A cosG B A sine C A tanG D sineA E cosGA Answer A cosG CT3 1b What is the correct formula for Ay the ycomponent of the vector A y A A cosG B AsinG C A cosG D A sine e E None ofthese Answer A sine Note if we measured the angle CCW from the positive Xdirection as shown below then the answer would be Ay A sin y CT3 2a Can two vectors of unequal magnitude sum to zero A Yes B No Answer NO The only way two vectors can sum to zero is if they have equal and opposite directions like so CT3 2b Can three vectors of equal magnitude sum to zero A Yes B No Answer If they form the sides of an equilateral triangle then yes they sum to zero CT3 3 Vectors AB and C sum to zero Vectors A and B are at right angles to each other What is the magnitude of C C A AB B AiB C V A2 B2 D Impossible to tell from the information given I 2 2 Answer By the Pythagorean Theorem the answer is A B C A CT3 4 Three vectors A B and C are as shown Which vector is S A B C A B C D E None of these Answer None of these The correct answer is below E None of these CT3 5 The position vector of a particle moving with constant velocity is shown below at two different times an earlier time t1 and a later time t2 Which arrow shows the direction of the velocity vector A B C D E None of these Answer B By looking at the position vectors you can see that the particle is moving to the right CT3 6 The velocity vector of a particle moving with constant acceleration is shown below at two different times an earlier time t1 and a later time t2 What is the direction of the acceleration vector A B C D E None of these Answer C The acceleration vector is straight down the same direction as the change in velocity vector 3 Af V1 AV V2 CT3 7 The vectors A B and C are shown The vector sum of these three vectors is SABC What is the value of Sx the Xcomponent of S C 2 D 3 E None ofthese Answer Sx Ax Bx Cx 3 3 3 3 What is Sy Answer Sy AyBy Cy 130 4 CT3 8 Which one equation below makes Q sense A K 2 B E 33 3 5 c E 31 43 D B X E A11 equations above are OK Answer All these equation are OK NOTE In lecture choice D was written as C A which caused some students to think that must be incorrect since it con icts with the equations given in A and C Full credit was given for either answers D or E
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