The average speed would be 0.65 m/s, therefore the correct option is (A).
The average speed is calculated by the formula
Average speed= (total distance/ total time)
The total distance of the trip=9.5+3.5+15=28 m
The total time of trip=43 sec
Therefore the average speed=28/43=0.65 m/s.
Answer:
Explanation:
Given
mass of children 

distance between two children 
suppose small child is at a distance of x m from pivot point
so torque of small child and heavier child must be equal



When you touch<span> a doorknob (or something else made of metal), which has a positive charge with few electrons.</span>
Kinetic Energy is movement energy (most simplistic way I can put it) so its motion.
Not having clean water to drink or bath. Also some organizations that live in the water might die because the water is polluted and that would be toxic form them