Exam 1 with Answer Key - General Physics I Laboratory | PHY 1114L, Exams of Physics

Download Exam 1 with Answer Key - General Physics I Laboratory | PHY 1114L and more Exams Physics in PDF only on Docsity! aad 4 apts to SCV’? . PHY 1114 General Physics | Name. CRN: 10064 Date: September 20, 2010 Exam 1 Clearly show all work for full credit. 1. When the outdoor emergency warning siren at Cheryl's school was tested, the sound from the siren took 7.0 s to reach her house located 2.40 km from the school. What is the speed of sound in air? (5 pts) Quant ye 2 440 m/s - + 540 m/s 2 0 640 me V- 2 Aov.iorm = 242M | 5 71.08 2. Which graph in the figures below represents an object traveling with a constant non- zero velocity? (2 pts) dx ad x eb uly A) Grapha B) Graph b GQ Graph c D) Graphd E) Both graphs c and b 3. _Itis possible to have zero acceleration, and still be moving. (2pts) rue 8) False We viconst : 4. Acar is stopped at a red traffic light. When the light turns to green, the car has a constant acceleration and crosses the 9.10-m intersection in 2.86 s. What is the magnitude of the car's acceleration? (5 pts) Vo> TOMS az? Yor 70m | Xz Wot Vt + zat® ~ . =~ 2x yz bath > as2 (74, (Ow) LAWN) (2.80s)* 3=42.225%s* es la 7 2.23%/52 | ae