Exam 1 Spring 1996 Answers 1) 2,6,9 2) km/hr^4 3) 90 degrees 4) (-3,1) 5) zero velocity and downward acceleration 6) a body having constant velocity and variable acceleration 7) 0.84 s 8) -1.7 m/s^2 9) 10.0 m/s 10) the magnitude of the bomb's vector velocity just before it strikes the ground is the same as when it left the plane is false. 11) 11 m 12) r = 0.29 km, and the car's speed is increasing. 13) both balls hit the ground with speed 44.5 m/s 14) 80 m 15 a) change in velocity b) displacement c) instantaneous velocity d) average acceleration e) average velocity Partial Credit: 27 s, 200 m, 7.4 m/s, 68 degrees, 25 s, 214 m, 8.5 m/s, 90 degrees