What is the average acceleration of the particle within the time interval 1 second to 3 seconds? 4.0
3
3.5
3.0
2.5
2.0
Velocity (m/s)
1.5
1.0
0.5
0.0
Time (s)
OA
-1 meter/second
B
O meters/second
C.
1 meter/second
D.
1.5 meters/second-

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19