For ALL the following problems use g = 10 N/kg 1. In how many of the following s

Question

For ALL the following problems use g = 10 N/kg 1. In how many of the following situations does the basketball have a net force of zero in the VERTICAL direction? I. A basketball sits at rest on a table. II. A basketball is dropped out of a high window. III. A basketball is rolled across a horizontal, flat surface. IV. A basketball is dropped, bounces off of the floor, and returns to half the height from which it was dropped. a. 0 b.1 c. 2 d.3 e. 4 2. In how many of the following situations does the object have a constant net force in the HORIZONTAL direction? I. A BOX is pulled across a frictionless table by a horizontal massless string with a tension of 12N. II. A BOX is pulled across a table with friction by a massless string with a tension of 12N. The string makes an angle of 370 with the horizontal. III. A BLOCK sits on the floor of an elevator that is accelerating downward. IV. A SUPERBALL is dropped bounces off of the floor, and returns to the height from which it was dropped. V. A BOX that is pushed across a table with friction has a constant velocity.

Explanation / Answer

QUESTION 1 )

answer c . 2 ----------------------- 1 and 2 statements are correct

QUESTION 2 )

answer b .2 ) ------------------------1 and 2 statements are true

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