PHYSICS 1250 Quiz: PHYSICS 1250 Quiz 2 2014 Spring

• School: Ohio State University
• Department: Physics
• Course: PHYSICS 1250
• Professor: All

Document Summary

Start quiz 20 minutes before end of class. 1 meter (m) = 3. 281 feet 1 mile = 5280 feet 1 hour =3600 s |g|=9. 8 m/s2 v=vi+at x-xi=vit+ at2 v2=vi. Problem 1: if vector a=-7. 0 -7. 0 and vector b= 3. 0 -2. 0 . What is the magnitude of the vector c=b+a? ( and are unit vectors along the x and y axis respectively: 3. 6 b) 4. 1 c) 9. 8 d) 11 e) 15. Problem 2: what angle does the vector c=b+a (see problem 1) make with the + x-axis: 240 b) 660 c) 2070 d) 2460. Problem 3: if vector r has x and y components = (3, -7) what are the components of the vector z=-3r? a) (-6, +10) b) (-9, +21) c) (21,-9) d) (-1, +7/3) e) z is undefined. Problem 4: a jet bomber flies horizontally over level terrain with a speed of 150 km/hour relative to the ground and at an altitude of 0. 5 km.