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Alkatran

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2. [2pt] Pick the statement which correctly describes the acceleration, a, of the objects described below (neglecting air resistance). Select from

A: a=0 m/s^2

B: 9.81 m/s^2 down

C: a=9.81 m/s^2 up

F: a>9.81 m/s^2 up

G: a<9.81 m/s^2 up

H: Not enough information

E.g., if the first answer is A and the rest C, enter ACCCCC.

1) Just after a bullet is shot upward from a gun

2) An elevator moving downward at constant speed

3) At the top of the path of an object thrown upward

4) While a ball is in a person's hand during a downward throw

5) An elevator starting on its descent

6) While a ball is in a person's hand during an upward throw

2. [2pt] Pick the statement which correctly describes the acceleration, a, of the objects described below (neglecting air resistance). Select from

A: a=0 m/s^2

B: 9.81 m/s^2 down

C: a=9.81 m/s^2 up

*D: a>9.81 m/s^2 down*

E: a<9.81 m/s^2 downE: a<9.81 m/s^2 down

F: a>9.81 m/s^2 up

G: a<9.81 m/s^2 up

H: Not enough information

E.g., if the first answer is A and the rest C, enter ACCCCC.

1) Just after a bullet is shot upward from a gun

2) An elevator moving downward at constant speed

3) At the top of the path of an object thrown upward

4) While a ball is in a person's hand during a downward throw

5) An elevator starting on its descent

6) While a ball is in a person's hand during an upward throw

problem 1: the italicized letters could be taken as less than -9.8 or greater than -9.8 for both! (is it less than 9.8 down, as in 5 down is less than 9.8 down or -10 is less than -9.8???)

1,2 and 3 are obviously B, 4 is D. the problem is 5 and 6

5 could be: E, D, G, H (or in extreme cases B)

6 could be: F, G, C, H

Combinations I've tried so far:

BBBDBC

*they all start with BBBD, so I'll just put 5 then 6

BF

EB

EC

EE

EF

EG

EH

HB

HH

Help... please :surprised