Yea it would be barrier. since the stream has a cover for the water
Arrows point away from both north and south.
No.
The acceleration of gravity on or near Earth's surface is 9.8 m/s² ,
not 20 m/s² .
If it were 20 m/s², then you would weigh almost exactly double
what you really weigh now.
There are three things that can be represented on a motion map
These three things are:
1)Motion
2)Acceleration
3)Velocity
