2. Which of the following figures below depict an object moving at a constant speed? 15 N 15 N 15 N 15 N 20 N 20 N 15 N 20 N 20 N 15 N 15 N 15 N 15 N A B D a) A b) A & C c) B & D d) D

x+2 If y = what is the value of y when x = 5i? 6-7 61 13 61; 40 61 13 + 0i 40 61 40 61 13 61

Model Mass Initial Velocity Final Velocity Speed Limit Road Conditions Time of Day Lamborghini Aventador 1,550 kg ?? 14.25 mph (6.64 m/s) Car A 35 mph (15.64 m/s) Icy 3:27 p.m. Based on the evidence, write a scientific explanation that determines whether or not Car A was speeding when it collided with Car B. Subaru Outback 2,100 kg 0 m/s 14.25 mph (6.64 m/s) Car B

FTcose 1. For each of the four trials, determine the airplane's mass from Eqn. (1) m = g. 2. For each of the four trials, (a) Find the period of the airplane's motion, which we will call T. (Frsine) T (b) Find the airplane's mass from Eqn. (2) 4nr In Eqn. (2) r is the radius of the circular path 3. The masses of the airplane (as measured on a scale) are 0.2935 kg for trial 13; 0.2147 kg for trial 2 ; 0.3935 kg for trial 3 ; 0.2939 kg for trial 4. 4. (a) Find the percent difference between each of masses given in step 3 above and the corresponding mass calculated using Eqn. (1). (b) Find the percent difference between each of masses given in step 3 above and the corresponding mass calculated using Eqn. (2).