2. In each of A, B, C, & D below, a sphere is moving from left to right next 20 points to a tape marked in meters. A strobe (flash) photograph is taken every
second and the location of the sphere is marked. Rank the magnitude of
the average velocity over the first two seconds. Remember the time
interval between each two dots is always one second.
А
O
o
4
3
O
6
0
5
O
8
1
O
10 m
2
9
o 을
o
B
O
OOO
0
1
3
O
4
5
o
8
6
7
9
10 m
C
2
O
6
0
3
5
o
9
7
10 m
O
10 m
9
D
o
0
2
5
6 7
Rank the magnitude of the average velocity over the first 2 seconds.
OR
2
3
4
All
Greatest
Least the same
ALI
zero
Canno
determine
O A >> C>D
OD > C >>A
OD > C> A>
O All the same