If a certain car, going with speed v1, rounds a level curve with a radius R1, it is just on the verge of skidding. If its speed is now doubled, the radius of the tightest curve on the same road that it can round without skidding is:A) 2R1B) 4R1C) R1/2D) R1/4E) R1

Explanation:

Let's use the centripetal force definition.

So the first force will be:

(1)

Here:

Now, the final speed is double of the first one, so V2 = 2V1, Therefore the force will be:

(2)

If we match both equation (1) and (2), we will find R2.

Finally,

I hope it helps you!

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

answer is slate

hope this