Given:
(Initial velocity)u=20 m/s
At the maximum height the final velocity of the ball is 0.
Also since it is a free falling object the acceleration acting on the ball is due to gravity g.
Thus a=- 9.8 m/s^2
Now consider the equation
v^2-u^2= 2as
Where v is the final velocity which is measured in m/s
Where u is the initial velocity which is measured in m/s
a is the acceleration due to gravity measured in m/s^2
s is the displacement of the ball in this case it is the maximum height attained by the ball which is measured in m.
Substituting the given values in the above formula we get
0-(20x20)= 2 x- 9.8 x s
s= 400/19.6= 20.41m
Thus the maximum height attained is 20.41 m by the ball
The ultimate cause of earth's winds is solar energy. when sunlight strikes Earth's surface,it heats that surface differently. Newly turned soil, for example,absorbs more heat than does snow. uneven heating of Earth's surface,in turn, cause difference in air pressure at various locations. heated air rises, creating an area of low pressure beneath. cooler air descends,creating an area of high pressure. since the atmosphere constantly seeks to restore balance,air from areas of high pressure always flow into adjacent areas of low pressure. this flow of air is wind. the difference in air pressure between two adjacent air masses over a horizontal ditance is called the pressure gradiant force. the greater the difference in pressure, the greater the difference pressure, the greater the force and tje stronger the wind
The electromagnetic wave shown above is made up of vibrating Electric fields.
I assume this is why electromagnetic waves can travel through a vacuum, due to lack of matter.
Permanent... static means staying the same. (It remains this meaning in English, science, an math)
Explanation:
Equation for Impact
FΔt = ΔP,
F = force
Δt = Impact of time
ΔP = Change in momentum
Car steering is engineered to fail in order to maximize the time of contact and hence reduce the initial impact and mitigate the damage incurred.
Road guard railing crumple on contact to maximize impact time and hence reduce impact intensity and mitigate damage.
Road safety containers are loaded with liquid or sand as they improve the period of impact.