0.0024
Milimetres are before centimetres and centimetres are before metres
<span>The gravitational force loses strength as a function of distance less rapidly than the nuclear force, but at very close ranges, such as those found within a single atom, the nuclear force is much stronger. So if the nucleons were each on opposite sides of a solar system, or even of a room, the force of gravity would be stronger, but in the described case the nuclear force is stronger.</span>
Answer:
If child weight is equal to rope force then child will move with uniform speed
or we can say that the child will remain at rest in his position
Explanation:
As we know that child is hanging by rope
so here there will be two forces on the child
1) Weight or gravitational force which act vertically downwards
2) Tension in the rope which act vertically upwards
Now if child will accelerate upwards then tension force must be more than the weight of the child
If tension force is less than the weight then child will decelerate and his speed will decrease
if tension force is equal to child weight then in that case the child will remain at rest or it will move with same speed
speed = 86km/hr
= 86000/3600
= 23.889m/s
time = 4.6s
acceleration = 23.889/4.6
a = 5.19m/s^2