See coulomb's law. Force is inversely proportional to the distance squared. So if you multiply r by 2, the force is multiplied by (½)² = ¼.
a. F/4
Jogging side by side since the speed is equal and the direction is the same i.e same velocity
Answer:
5m
Explanation:
Use the Pythagorean theorem to calculate the long edge of the triangle, which would be his displacement.
Answer:
vₓ = xg/2y
Explanation:
In this question, let us find the time it takes for the ball on the right that has zero initial velocity to reach the ground.
By newton equation of motion we know that
y = v₀ t - ½ g t²
t = 2y / g
This is the time it takes for the ball on the right to reach the ground; at this time the ball on the left travels a distance
vₓ = x/t
vₓ = xg/2y
vₓ = xg/2y
Where we assume that x and y are known.
Answer:
C: equal to mg
Explanation:
in free-fall, gravity is always the net force on an object
