Answer:
sorry but I can understand the question
The pattern of weather in an area over a long period of time is called 'climate'. <em>(B)</em>
In other words:
-- What it's like outside your house today, in the middle of March, is the 'weather'.
-- The 100-years average of what it's like outside your house in the middle of March is the 'climate'.
Given
m1(mass of the first object): 55 Kg
m2 (mass of the second object): 55 Kg
v1 (velocity of the first object): 4.5 m/s
v2 (velocity of the second object): ?
m3(mass of the object dropped): 2.5 Kg
The law of conservation of momentum states that when two bodies collide with each other, the momentum of the two bodies before the collision is equal to the momentum after the collision. This can be mathemetaically represented as below:
Pa= Pb
Where Pa is the momentum before collision and Pb is the momentum after collision.
Now applying this law for the above problem we get
Momentum before collision= momentum after collision.
Momentum before collision = (m1+m2) x v1 =(55+5)x 4.5 = 270 Kgm/s
Momentum after collision = (m1+m2+m3) x v2 =(55+5+2.5) x v2
Now we know that Momentum before collision= momentum after collision.
Hence we get
270 = 62.5 v2
v2 = 4.32 m/s
The item with the most inertia is the one with the greatest mass.
It's easy to identify because it's also the heaviest one.
There are a great many other issues that make something
difficult for movers to move, besides its weight. Size, shape,
handles, wheels, getting it around tight corners, etc. So we
can't necessarily say that the heaviest item is the one that
presents the biggest problem for the movers.
I would do a windmill project!
Hope it helps!:)
