Kilogram is mass and a pound is mass influenced by gravity aka the weight relative to it's form on earth's effects on it.
so kilogram, mass.
weight, pound
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.
Answer:
So the car would skid 4 times the initial skidding displacement under the identical conditions when the car's initial velocity is just double.
Explanation:
Under identical conditions when the brakes are applied for the same body moving with twice the initial speed then we can analyse using the equation of motion.
Initially:
![v^2=u^2-2a.s](https://tex.z-dn.net/?f=v%5E2%3Du%5E2-2a.s)
...........................(1)
where:
final velocity of the car = 0 (because the car stops)
initial velocity of the car
acceleration of the car (here it is deceleration and hence taken with negative sign)
displacement of the car before stopping
Final condition:
Initial velocity is, ![2u](https://tex.z-dn.net/?f=2u)
So,
![v^2=(2u)^2-2a.s'](https://tex.z-dn.net/?f=v%5E2%3D%282u%29%5E2-2a.s%27)
![0^2=4u^2-2a.s'](https://tex.z-dn.net/?f=0%5E2%3D4u%5E2-2a.s%27)
![s'=\frac{4u^2}{2a}](https://tex.z-dn.net/?f=s%27%3D%5Cfrac%7B4u%5E2%7D%7B2a%7D)
.............................(2)
Now divide eq. (2) by (1)
![\frac{s'}{s}=4](https://tex.z-dn.net/?f=%5Cfrac%7Bs%27%7D%7Bs%7D%3D4)
So the car would skid 4 times the initial skidding displacement under the identical conditions when the car's initial velocity is just double.
Answer:
Yes. The current is actually flow of charge and in actual situation electrons flow from negative terminal to positive terminal. But in physics the convention of positive charge flow is used i.e. we take the direction of current from positive to negative terminal.
Explanation: