Question

Eli rolled a ball down the cement sidewalk as hard as he could. The ball rolled for less than a minute before it came to a stop. What force acted to slow and finally stop the ball?
A.
the normal force, pushing upward on the ball
B.
friction, acting in opposition to the motion of the ball
C.
friction, acting in the same direction as the motion of the ball
D.
the normal force, pulling downward on the ball

Answer 1

i think it is B

Answer 2

b
yay it is

Answer 3

Thanks so much! @kedwards172 @cittycat appreciate it

Answer 4

yeah it is b

Answer 5

wlecome

Answer 6

i actually did this exact question in 7th grade

Answer 7

i am in 7th grade

Answer 8

good luck

Answer 9

Oh lol i'm in 9th @Thebossofme191

Answer 10

i hated 7th grade

Answer 11

*8th

Answer 12

im in 8th

Answer 13

i love 7th grade

Answer 14

oh well thats good

Answer 15

but i also hate it because i am home schooled

Answer 16

me too but i like it because there is no detraction

Answer 17

Imma close this thing so you guys should carry on somewhere else :)

Answer 18

i miss all my friends

Answer 19

7th grade was bad because i was about to hit anyone who talked