AP Physics 1 Multiple Choice Student Projectile Motion Review

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AP Physics 1Projectile Motion ReviewMultiple Choice1. Which of the following is not true about the path of acanon ball launched horizontally from the earth’ssurface if air resistance is neglected?A) The cannonball has a uniform horizontal velocityB) The total velocity of the cannonball increases asa function of timeC) The vertical velocity of cannonball increases as afunction of timeD) The distance the cannonball travels only dependsupon the height it is shot fromE) The distance the cannonball travels isdependent on its mass2. A ball on a table of height h is rolled off a tabletraveling at velocity v, neglecting air resistance howmuch time does it take for the ball to hit the ground?A)B)C)D)Student6. A person throws a ball at an angle of 30o with thehorizontal with a velocity of 32 m/s. As the ball isthrown, a second person is running past the thrower ata constant velocity. At what velocity must this secondperson run so that she may catch the ball as it hits theground?A) 32 m/sC) 32cos 30 o m/sE) 64cos 30 o m/sB) 32sin 30o m/sD) 32tan 30 o m/sBase your answers to questions 7 and 8 on "thefollowing diagram, in which a ball of mass m isrolled horizontally off a table of height h and lands adistance D from the edge of the table.E)3. A basketball is thrown upwards on an arc at a 60degree angle with the horizontal. If the velocity ofthe ball is 5 m/s how fast must the thrower run tocatch the ball after it is released?A) 2.5 m/sC) 5.0 m/sE) 20 m/sB) 4.3 m/sD) 10 m/s4. A snowball is thrown out the window of a car movingat 20 m/s. The ball is thrown vertically to hit asnowman 20 meters away at window level. Whatspeed would the snowball need to be thrown to hit thesnowman?A) 2.5 m/sC) 9.8 m/sE) 19.6 m/sB) 4.9 m/sD) 14.7 m/s5. Rocky the Flying Squirrel is carrying a nut of mass0.5 kg while flying horizontally at a height of 15 mabove the ground at a speed of 12 m/s. Bullwinkle iseagerly awaiting the delivery of the nut on theground. Rocky releases the nut as he is directly aboveBullwinkle. How far from Bullwinkle will the nutland if Bullwinkle does not move?A) 3C) 6E) 12mmmB) 3D) 6mm"7. What is the initial horizontal velocity of the ball?A)B)C) 2Dh/gE)D) Dhg8. How much time elapses between the time the ballleaves the edge of the table to when hits the ground?A) hDC) hD/gE)B) h/DD) 2h/g

Multiple Choice9. A baseball player throws a ball horizontally. Whichstatement best describes the ball's motion after it isthrown? [Neglect the effect of friction.]A) Its vertical speed remains the same, and itshorizontal speed increases.B) Its vertical speed remains the same, and itshorizontal speed remains the same.C) Its vertical speed increases, and its horizontalspeed increases.D) Its vertical speed increases, and its horizontalspeed remains the same.E) Its vertical speed increases and its horizontalspeed decreases.10. The diagram below shows a projectile moving withspeed v at the top of its trajectory.12. A projectile is fired with an initial velocity v 0 at aninitial angle q 0 with the horizontal. Which of thefollowing pairs of graphs below best represents thehorizontal components of the velocity, v, andacceleration, a, of the projectile as functions oftime?A)B)C)D)Which vector best represents the acceleration of theprojectile in the position shown?A)B)C)D)11. A bullet is fired horizontally at a velocity of 200 m/sat a height of 1 m. At the same time, another bullet isdropped 1 m from rest. The difference between t1,the time it takes the fired bullet to hit the ground,and t2, the time it takes the dropped bullet to hit theground isA) 0 sB) 1 sC) 2 sD) 4 sE) 8 s

Multiple ChoiceBase your answers to questions 13 and 14 on theinformation below.A projectile is launched from ground level with aninitial velocity of v at an angle q above thehorizontal. Ignore air resistance.13. The maximum horizontal displacement of theprojectile isA) vsin 2qgB) (vsin q ) 2C) vsin 2q2gD) (vsin q ) 2E) v2sin 2qgggB) 8.4 mD) 16.8 m2gB) 9.2 mD) 12 m16. How much time will pass before the ball hits theground?B) 2.8 s C) 4.6 s D) 6 sE) 9.2 sB) 20 m/s.D) 30 m/s.19. An object moving horizontally with speed v falls offthe edge of a vertical cliff and lands a distance dfrom the base of the cliff. How far from the base ofthe cliff would the object land if the height of thecliff was doubled?A) dC) 2dE) 4dA ball is thrown horizontally 20 m above the groundwith a velocity of 5 m/s.15. How far from the base of the cliff will the ball land?A) 2 sA) 4.2 mC) 12.6 mE) 22.4 mA) 15 m/s.C) 25 m/s.E) 35 m/s.2gBase your answers to questions 15 and 16 on thefollowing information.A) 5.6 mC) 10 mE) 18.4 mFrom a cliff of height 28.8 m above the ground, aball is thrown horizontally with an initial velocity of7 m/s.17. What is the range of the ball?18. The magnitude of the velocity of the ball when itstrikes the ground is most nearly14. The maximum vertical displacement of the projectileisA) vsin 2qgB) (vsin q ) 2C) vsin 2q2gD) (vsin q ) 2E) 2vsin 2qgBase your answers to questions 17 and 18 on thefollowing information.B)dD) 2 d20. An object moving horizontally with speed v falls offthe edge of a vertical cliff and takes a time t to land.How long would it take for the object to land if itwas moving with a horizontal velocity 2v?A) ttB)C) tD) 2tE) It could not be determined unless the height ofthe cliff was known

Multiple Choice21. Base your answer to the following question on theinformation below.A 4.0 kg block rests at the edge of a platform that is20 m above level ground. The block is launchedhorizontally with an initial velocity of 15 m/s.The time it would take to reach the ground is mostnearlyA) 1.33 sC) 1.73 sE) 2.5 sB) 1.41 sD) 2.0 sBase your answers to questions 22 through 26 on the following information.A cannonball is fired and follows the parabolic path shown below. Air resistance is negligible. PointB is the highest point on the path and points A and C are at the same height.22. Which of the following best describes the direction of the net force on the ball at point A?A)B)C)D)E)up and to the rightto the rightdown and to the rightdownThere is no net force on the cannonball at point A23. Which of the following best describes the direction of the velocity of the cannonball at point B?A) to the rightC) down and to the rightE) downB) up and to the rightD) up24. Which of the following best describes the direction of the acceleration of the ball at point C?A) to the rightC) downE) up and to the leftB) down and to the rightD) up and to the right25. How do the accelerations of the ball at the three points compare?A) a A aB a CB) a B aA a CC) a A a B a C D) a A aB a CE) a B aA a C26. How do the speeds of the cannonball at the there points compare?A) vA vB vCB) vC vB vAC) vB vA vCD) vA vB vCE) vB vA vC

Multiple Choice27. A cannon fires a cannonball with an initial velocityof 30 m/s at an angle of 60º to the horizontal. If airresistance is negligible, the amount of time thecannonball remains in the air isA) 2.6 s B) 3.0 s C) 5.2 s D) 6.0 s E) 7.8 s28. An object is thrown off of a cliff 320 m above levelground with an initial horizontal velocity of 20 m/s.The amount of time it takes to strike the ground ismost nearlyA) 2 sB) 4 sC) 8 sD) 12 sE) 16 s29. A ball is launched from ground level with an initialupwards velocity of 20 m/s and an initial horizontalvelocity of 30 m/s. How far from its startingposition does the ball land assuming the ground islevel?A) 30 mC) 120 mE) 180 mB) 60 mD) 150 m30. A ball is thrown horizontally out of a hot air balloonat a height of 500 m above level ground with aninitial velocity of 15 m/s. If air resistance isnegligible, the time that it will take the ball to reachthe ground is most nearlyA) 3 sB) 5 sC) 10 sD) 15 sE) 33 s31. A cannon fires a projectile with an initial speed v atan angle q above the horizon. What is the horizontaldistance traveled by the projectile?A) v 2sin qgB) 2v 2sin qgC) v 2sin2 qg2D) 2v sin2 qg2E) 2v sin2 qg32. A cannon fires a projectile with an initial speed v atan angle q above the horizon. What is the maximumheight reached by the projectile?A) 2v 2sin2 qg2B) v sin2 q2gC) 2v 2cos q sin qg2D) v cos q sinqg2E) v cos 2 qgBase your answers to questions 33 and 34 on thefollowing information.An object is thrown with a horizontal velocity of15 m/s off of a cliff that is 180 m above level ground.33. If air resistance is negligible, the distance betweenthe base of the cliff and the place where the objectreaches the ground is most nearlyA) 50 mC) 150 mE) 90 mB) 60 mD) 180 m34. If air resistance is negligible, the time it takes theobject to reach the ground is most nearlyA) 4 sB) 5 sC) 6 sD) 7 sE) 8 s35. An object is thrown horizontally off of a 125 m highcliff above level ground with an initial velocity of 15m/s. If air resistance is negligible, the distance fromthe base of the cliff to the point where the objectlands is most nearlyA) 25 mC) 75 mE) 150 mB) 45 mD) 90 m

Multiple Choice36. The ammunition fired from an M-16 rifle has amuzzle velocity of 1000 m/s. A sniper perched on atower 50 meters high aims at a target and fires.(A) The sniper aims her rifle 53.1 degrees above thehorizontal. How far away from the platform does thebullet hit the ground? Neglect air resistance.(B) With what speed would the bullet hit?(C) If the target is 500 meters away on a platform 50meters high, what angle would the sniper have tomake with her gun to hit the target?(D) What would be the speed of the bullet when ithits?37. A cheetah is resting when a hare traveling in astraight path passes at its top speed of 25 m/s. Ittakes the cheetah 1.5 seconds to get up and beginrunning. The cheetah accelerates to its top speed of45 m/s in 20 seconds. It can maintain this speed for2 seconds before decelerating at 4 m/s 2.(A) What is the initial acceleration of the cheetah?(B) How long does the chase last?(C) How far has the cheetah traveled before catchingthe hare?(D) What is the cheetah's speed when it catches thehare?38. A physicist drops a stone off the top of a cliffoverlooking a lake. She hears the splash 4 secondsafter releasing the stone.(A) Neglecting air resistance and assuming a speedof sound of 340. m/s, how long does it take for thestone to reach the lake?(B) How long does it take for the sound to reach herear?(C) What is the velocity of the stone just before ithits the water?(D) What is the height of the cliff?

Answer Keyproejct .C28.C29.C30.C31.C32.B33.E34.C35.C36.(A) 98000 m(B) 1000 m/s(C) 44.9(D) 1000 m/s37.(A) 2.25 m/s 2(B) 25.88 seconds(C) 684 m(D) 29.5 m/s38.(A) 3.79 sec(B) 0.21 sec(C) 37.1 m/s(D) 70.5 m

Multiple Choice 21. Base your answer to the following question on the information below. A 4.0 kg block rests at the edge of a platform that is 20 m above level ground. The block is launched horizontally with an initial velocity of 15 m/s. A) 1.33 s B) 1.41 s C) 1.73 s D) 2.0 s E) 2.5 s

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