Answer:
It will take 1.789 sec
Explanation:
We have given height h = 30 m
Initial velocity u = 8 m/SEC
Acceleration due to gravity
Now according to second equation of motion
After solving we get t = -3.42 sec and t = 1.789 sec
As negative time is not possible so time will be 1.789 sec
Answer:
Explanation:
The answer is neutrons and protons. The proton for example is composed of 3 quarks with charges of 2/3 + 2/3 - 1/3 which gives an overall charge of 1.
Neutron are composed of 2 quarks that are - 1/3 in charge and 1 that has a charge of 2/3. The overall charge is 0.
The law of conservation of energy states that energy is neither created nor destroyed, but can be converted from one form to another.
When the book was at the shelf, its kinetic energy was zero and its potential energy was maximum. As it fell, its potential energy stated converting to kinetic energy. Before the book directly hits the ground, its kinetic energy is maximum and its potential energy is zero.
Based on the above explanation, at the moment the book landed on the floor, ALL the potential energy was converted to kinetic energy, so the kinetic energy = 67 Joules.
Organs are made up of different types of organs.