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Quiz #3. Physics 2021 Projectile Motion Name Sayed Husain AlmovsawI 1. Two balls, A and B are thrown at the same angle above horizontal, but initial velocity of ball A is two times greater than initial velocity of ball B. Ignore air resistance. we can conclude that horizontal range covered by ball A is a. same as range covered by ball B b. twice the range covered by ball B c. four times the range covered by ball B. d. greater than horizontal range covered by ball b, but we don't know how exactly greater. 2. Object A is thrown up with speed v; object B is thrown up with speed 2v. Air resistance is absent. When they return to initial level we can conclude that time of travel of object A is a. Four times of object B b. Two times of object B c. Same time as for object B d. 1/2 times of object B e. 1/4 of time of object B 3. Three balls are kicked from the ground level at some angles above horizontal with different initial speeds. All three balls reached in their paths the same maximum height. Ball A covered the total horizontal range D; ball B covered the total horizontal range 1.5D and ball C covered total horizontal range 2D when they hit the ground. Which of these balls has the greatest horizontal component of velocity? a. A b. B C d. They all have the horizontal component of velocity 4. Object is thrown up with some initial velocity. No air resistance is present. We can conclude that a. Acceleration on the way up is greater than acceleration on the way down. b. Acceleration on the way up is smaller than acceleration on the way down. c. Acceleration on the way up is exactly equal to acceleration on the way down. d. Acceleration on the way up is equal in magnitude, but opposite in direction to the acceleration on the way down. 5. An object is thrown vertically up. At the highest point of its trajectory a. Both its velocity and acceleration are 0 b. Its velocity is 0, but acceleration is not c. Its acceleration is 0, but velocity is not d. Both its acceleration and velocity are not 0. e. Depends on character om motion