6. Which of the following objects are in "free fall"? a) a ball that was thrown horizontally b) a ball that was thrown at an angle above horizontal a ball that was thrown at an angle below horizontal a ball that was dropped e) all of the above 7. A baseball player is trying to determine her maximum throwing distance. She must release the ball: a) at an angle that lets the ball reach the highest possible height b) horizontally at an angle of 450 so that it has maximum possible speed, regardless of angle at an angle between 45 and 90 8. A car travels 35 km [North] in 30 minutes and then hits a traffic jam and spends 1.5 hours travelling 16.7 km/h [North]. The average velocity of the car is: a) 43.35 km/h [North] b) 51.7 km/h [North] c) 16.7 m/s [North] d) 8.34 m/s [North] e) 0 9. A ball is thrown up in the air and then caught at the same height. The acceleration is 9.8 m/s' [down]: a) on the way up b) on the way down ) at the peak of its trajectory d) two of A, B, and C are correct e) all of A, B, and C are correct 10.A boy throws a ball straight up off a second floor balcony and it then lands on the ground. Neglecting air resistance, the magnitude of velocity is greatest: a) just after it leaves the boys hand b) at the peak of the balls trajectory c) just before it hits the ground d) it remains the same throughout the motion e) impossible to tell without knowing the angle of projection