Name Class Date Ver: 3 PHYSICS 1401-HW 03 -8. A ball is rolled horizontally off

Question

Name Class Date Ver: 3 PHYSICS 1401-HW 03 -8. A ball is rolled horizontally off a table with an initial speed of 0.22 m/s. A stop watch measures the ball's trajectory time from table to the floor to be 0.2 s. How far away from the table does the ball land? (g 9.8 m/s and air resistance is negligible) A. 0.24 m B. 0.392 m C. 0.152 m D. 0.088 m E. 0.044 m 9. A baseball is thrown by the center fielder (from shoulder level) to home plate where it is caught (on the fly at an equal shoulder level) by the catcher. At what point is the ball's speed at a minimum? (air resistance is negligible) A. just after leaving the center fielder's hand B. at the top of the trajectory C. just before arriving at the catcher's mit D. speed is constant during entire trajectory

Explanation / Answer

8] horizontal distance = Vx*t = 0.22*0.2 = 0.044 m

option e is correct

9] at the top of trajectory because it has only horizontal component at the top, and the horizontal component is same everywhere.

option b is correct.

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