Answer:

Explanation:
Regardless of the initial velocity of the pebble, the acceleration of the pebble is equal to the gravitational acceleration which is equal to 9.8 m/s2 towards downwards direction.
This can be shown by Newton's Second Law. According to the law, the net force applied on an object is equal to mass times acceleration of that object.
During the downward motion, the only force acting on the pebble is the gravitational force, hence its acceleration is equal to gravitational acceleration.
The correct answer is A. The strands are different. Hope this helps! :)
600km since it would be 1350 divided by 2.25
Answer:
9 x 10^-12 c
Explanation:
q1 = 6 C
d = 0.3 m
q2 = ?
F = 5.4 N
As te force on the second charge is in the positive X axis direction so the charge on the second particle is positive in nature.
F = K q1 q2 / d^2
5.4 = ( 9 x 10^9 x 6 x q2) / (0.3 x 0.3)
5.4 x 0.3 x 0.3 = 54 x 10^9 x q2
q2 = 9 x 10^-12 C