Answer:
Explanation:
A ball is thrown vertically upward with a certain Kinetic Energy in the absence of air resistance and while returning it experiences air resistance.
Air resistance causes the ball to lose its kinetic energy as it provides resistance which will convert some of its kinetic energy to heat energy.
So in a way total energy is conserved but not kinetic energy as some portion of it is lost in the form of heat.
Answer:
Different masess move differently.
Explanation:
When the line of gravity is within the buissness operating system, an object or person is said to be stable. When the line of gravity falls in the exterior of the "bos" ( buisness operating system) , the object or person is said to be unstable. ... A larger "bos" increases security (the line of gravity must move a greater distance to fall outside the "bos") Although the gravitational force the Earth exerts on the objects is diverged. Their masses are just as different, so the effect we watch (acceleration) is the same for each. The Earth's gravitational force accelerates objects when they fall. It always pulls, and the objects constantly speed up.
Answer:
speed and time are Vf = 4.43 m/s and t = 0.45 s
Explanation:
This is a problem of free fall, we have the equations of kinematics
Vf² = Vo² + 2g x
As the object is released the initial velocity is zero, let's look at the final velocity with the equation
Vf = √( 2 g X)
Vf = √(2 9.8 1)
Vf = 4.43 m/s
This is the speed with which it reaches the ground
Having the final speed we can find the time
Vf = Vo + g t
t = Vf / g
t = 4.43 / 9.8
t = 0.45 s
This is the time of fall of the body to touch the ground