Answer:
How long or wide something is
Explanation:
Answer is B.
In a lever, the effort arm is 2 times as a long as the load arm. The resultant force will be twice the applied force.
Hope it helped you.
-Charlie
To stop instantly, you would need infinite deceleration. This in turn, requires infinite force, as demonstrable with this equation:F=ma<span>So when you hit a wall, you do not instantly stop (e.g. the trunk of the car will still move because the car is getting crushed). In a case of a change in momentum, </span><span><span>m<span>v⃗ </span></span><span>m<span>v→</span></span></span>, we can use the following equation to calculate force:F=p/h<span>However, because the force is nowhere close to infinity, time will never tend to zero either, which means that you cannot come to an instantaneous stop.</span>
I think iron? i’m not 100% sure
Maybe this will help you out:
Momentum is calculate by the formula:
![P = mv](https://tex.z-dn.net/?f=P%20%3D%20mv)
Where:
P = momentum
m = mass
v = velocity
The SI unit:
![mass = kg\\ velocity = \dfrac{m}{s}](https://tex.z-dn.net/?f=mass%20%3D%20kg%5C%5C%20velocity%20%3D%20%5Cdfrac%7Bm%7D%7Bs%7D)
So the unit of momentum would be:
![kg.\dfrac{m}{s}](https://tex.z-dn.net/?f=kg.%5Cdfrac%7Bm%7D%7Bs%7D)
Impulse is defined as the change in momentum or how much force changes momentum. It can be calculate with the formula:
I = FΔt
where:
I = impulse
F = Force
Δt = change in time
The SI unit:
F = Newtons (N) or ![kg.\dfrac{m}{s^{2} }](https://tex.z-dn.net/?f=kg.%5Cdfrac%7Bm%7D%7Bs%5E%7B2%7D%20%7D)
t = Seconds (s)
So the unit of impulse would be derived this way:
I = FΔt
I =
x ![s](https://tex.z-dn.net/?f=s)
or
![\dfrac{kg.m.s}{s^{2}} = \dfrac{kg.m.s}{s.s}](https://tex.z-dn.net/?f=%5Cdfrac%7Bkg.m.s%7D%7Bs%5E%7B2%7D%7D%20%3D%20%5Cdfrac%7Bkg.m.s%7D%7Bs.s%7D)
You can then cancel out one s each from the numerator and denominator and you'll be left with:
![kg.\dfrac{m}{s}](https://tex.z-dn.net/?f=kg.%5Cdfrac%7Bm%7D%7Bs%7D)
So then:
Momentum: Impulse
![kg.\dfrac{m}{s}](https://tex.z-dn.net/?f=kg.%5Cdfrac%7Bm%7D%7Bs%7D)