If its accelerating it will increase velocity in the direction of the acceleration which is perpendicular to the velocity.
3, protons are positive and there are 3 positive atoms visible
Answer:0.69
Explanation:
Coefficient of kinetic friction=f/R=61.8/90=0.69
The initial height of the first body is given by:

where
g is the gravitational acceleration
t is the time it takes for the body to reach the ground
Substituting t=1 s, we find

The second body takes takes t=2 s to reach the ground, so it was located at an initial height of

The second body started its fall 1 second before the first body, therefore when the second body started its fall, the first body was located at its initial height, i.e. at 4.9 m from the ground.
I think it is called a drought but i would look it up