Question 1 (4 points) The tension in the string is equal to meg (mass of block B x g) if the system stays at rest. A B True O FalseQuestion 2 (4 points) The tension in the string is equal to mBg (mass of block B x g) if block B is falling. Question 3 (4 points) If a motion maintains a non zero constant speed, the acceleration of the motion will be zero Question 4 (5 points) There are following 7 physical quantities: a-time, b-mass, c-velocity, d-speed, e- force, f-displacement, and g-distance. Find the correct answer below. scalars: a-b-c vectors: d-e-f-g they are all scalars C scalars: a-b-d-f-g vectors: c-e they are all vectors scalars: a-b-d-g vectors: c-e-f Question 5 (5 points) If vectors A = 4i + 3j and B = 3i + 4j, Find the magnitude of A - B. 0.5 O 1 Oo Osqrt(3) O sqrt(2)Question 6 (5 points) If vectors A = 4i + 3j and B = 3i + 4j, Find the direction of A - B. along x-axis along y-axis 45 degree above x-axis 45 degree below x-axis along -x-axis Question 7 (4 points) Speed limit of some interstate highways in Texas is 85 miles per hour, find the speed value in m/s (1 mile = 1609 m). 27 29 31 41 38Question 8 (5 points) An object is thrown upward from ground (y = O m) at time t = O s with initial velocity of 10 mfs. Consider the process from t = 0 to the nal moment when the object just about strikes the ground. Find the average velocity and average speed (in m/s). 0 5 (down), 5 O 10 (up), 0 Question 9 (5 points) A daring swimmer dives off a cliff with a running horizontal leap, as shown in the figure. If swimmer touches the water at 2.4 m from the ledge, find the swimmer's initial horizontal speed (m/s). 0 12.8 m 2.40 In 240 m Question 10 (5 points) Shown in the right figure are the trajectories of four artillery shells. Each was fired with the same speed. Which one has the largest x-component of the initial velocity? QC OB 0 need more information to determine 0 A O D Question 11 (5 points) Shown in the right figure are the trajectories of four artillery shells. Each was fired with the same speed. Which one has the largest y-component of the initial velocity? A C D 0 Need more information to determine