CT3-1. A projectile is fired at an angle  with initial velocity v0 from a table a height h above the floor. The projectile strikes the floor with a final speed v given by the formula 2 2x yv v v= + . What is the correct formula for vx? A) v0cos B) v0sin C) Neither of these CT2D-2. A bullet is fired horizontally from a rifle on the Moon (where there is no air). The initial speed of the bullet when it leaves the gun barrel is vo. Assume that the ground is perfectly level (and endless). I ) During its entire flight, the minimum speed of the bullet is vo.II ) The acceleration of the bullet is constant during its flight.III ) The time it takes for the bullet to hit the ground increases as vo is increased.A ) All of the above statements are trueB) Only two of these statements is true.C) Only one of these statements is true.CT2D-3. Two projectiles are fired from a cannon. For projectile A, the cannon is tilted upward at an angle twice that of projectile B. Both projectiles are fired with the same initial speed. (As usual, neglect air resistance.)Which projectile was in the air longer?A) A B) B C ) A and B were in the air the same length of time.D ) Not enough information to answer the question.ABCT2D-4. A hunter shoots a monkey in intergalactic space (where there is no gravity). The bullet flies in a straight line and hits the monkey. Thepath of the bullet is described by the vector equation tvrroo When the time t is such that the bullet is half-way to the monkey, the vector ris which vector on the diagram? xyPath of bulletstartfinishxyBACCT2D-5. A rifle is accurately aimed at a rabid monkey hanging from thebranch of a tree. The instant the gun is fired, the monkey releases the branch and starts falling. The monkey is well within the range of the rifle. The initial speed of the bullet is vo. What happens?A ) The bullet finds its target, regardless of the value of vo. (Assuming vo still large enough to reach the air below the monkey.)B ) The bullet hits the monkey only if vo is large enough.C ) The bullet misses.vogunCT2D-6. A pellet is fired from a slingshot with initial speed vo at an angle . The projectile lands on a building. Where is the speed of the projectile a minimum?A) Immediately after the pellet is launched.B) At the apex of the trajectory.C) Just before the pellet hits the building.CT2D-7. Consider the velocities at times t1 and t2. These are velocity vectors V1 and V2. Draw a V1 + V = V2 vector diagram. What is the direction of V, the change in velocity between t1 and t2?A) straight up  B) straight down C) upper right D) lower rightABCvot1t2voCT2D-8A particle is moving along the path shown, with constant speed. Its velocity vector at two different times is shown. What is the direction of the acceleration when the particle is at point X?XDCBA(E) None of theseCT4-6A race car travels around the track shown at constant speed. Over whichportion of the track is the magnitude of the acceleration the smallest?A) From 1 to 2 B) From 3 to 4C) Neither of these D) Both of these1243The Midterm exam was ..A) too easy. B) about right. C) too hard.What percentage of students in PHYS2010 bubbled in their student ID incorrectly on Exam 1?A) 0.5% B) 1% C) 2% D) 5% E)