A kg car travelling with velocity m/s takes to stop under full braking. And the same car under similar road conditions travelling with velocity takes to stop under full braking.
How can we find Distance at velocity ?
In case of car stop under full braking after .
So we can find the acceleration by third equation of motion
Here is final velocity which is zero.
is initial velocity which is
is displacement
So substitute the values in equation of motion
In case of initial velocity acceleration is same because same car and same road condition so acceleration is
We can find the distance by using the equation of motion
Distance is
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Answer: 0.1125A
Explanation:
We need to know the total resistance which will be:
R = R1+R2
where,
R1 = 20 ohm
R2 = 60 ohm
Therefore, R = 20 + 60 = 80 ohm
We should note that from Ohm's law
v = iR
i = v/R
where,
i = 9/80 = 0.1125 A
Therefore, the current that flows out of the battery is 0.1125A
It seems you didnt give the last answer, but a - d seem like pretty reasonable things to do so it is probably C.