Answer:
Explanation:
The initial mechanical energy of the object, when it is suspended at a height h above the planet of radius R and mass M, is just gravitational potential energy, so
When the object reaches the ground, its mechanical energy is now sum of its kinetic energy Kf and its new gravitational potential energy Uf:
Since the mechanical energy is conserved, we can write
Ei = Ef
So we can write
from which we can find an expression for v, the speed of the object when it hits the ground:
Answer:
20 m/s
Explanation:
av. speed = total distance/ total time
= 10000/500
= 100/5 = 20 m/s
If spring constant is doubled, the mass on spring will be doubled as well. according to this formula, F=ke
k stands for spring constant and e stands for the length extended
Answer:
The constriction causes the mercury column to break under tension, leaving a vacuum between the bottom of the column and that in the bulb, and the top of the column stays still at the position reached in the body - a "peak hold" system.