Mathematics, 12.12.2019 22:31 aimeeoconnor20p6b43o

Acar goes around a curve with a radius of 65 meters while traveling at 22 m/s. calculate the car's centripetal
acceleration
7.4 m/s
0.34 m/s
3.0 m/s
190 m/s
4.3 m/s

Answers: 1

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Answer from: 001234567891011

7.4 m/ $s^{2}$ .

Step-by-step explanation:

When an object rotates around a fixed center in a circular path of radius R then centripetal force acts on the object ,

Centripetal acceleration equals

$\frac{v^{2} }{r}$ Where,

v is the velocity of the object rotating in circular motion

and r is the radius of the circle.

Here , r = 65 meters.

v = 22 m/s.

Thus centripetal acceleration equals $\frac{22^{2} }{65}$

= 7.44 m/ $s^{2}$ .

Thus option A is the best option i.e., 7.4 m/ $s^{2}$ .

Answer from: Quest

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” is $(\frac{n}{2}+12)-4$ when n=4,we substitute 4 whetever we see n to get, $(\frac{4}{2}+12)-4$ we simplify to obtain, $=(2+12)-4$ we further simplify to get, $=14-4=10$ therefore the correct answer is c.

Answer from: Quest

starting with:

5 + x - 12 = 2x - 7

5 + x - 12 - x = 2x - 7 - x (subtract x from both sides)

5 - 12 = x - 7 (combine and cancel x's from both sides)

5 - 12 + 7 = x - 7 + 7 (add 7 to both sides)

0 = x (add numbers together on both sides)

so in order for the equation to be true, x must be 0.

trying x = -0.5

5 + x - 12 = 2x - 7 (original equation)

5 + -0.5 - 12 = 2(-0.5) - 7 (plug in value of x)

5 + -0.5 - 12 = -1 - 7 (did multiplication)

-7.5 = -8 (did addition on both sides)

since -7.5 is obviously not equal to -8, the value of -0.5 for x is wrong.

trying x = 0

5 + x - 12 = 2x - 7 (original equation)

5 + 0 - 12 = 2(0) - 7 (plug in value of x)

5 + 0 - 12 = 0 - 7 (did multiplication)

-7 = -7 (did addition on both sides)

since -7 equals -7, that demonstrates that the value of 0 for x is correct.

trying x = 1

5 + x - 12 = 2x - 7 (original equation)

5 + 1 - 12 = 2(1) - 7 (plug in value of x)

5 + 1 - 12 = 2 - 7 (did multiplication)

-6 = -5 (did addition on both sides)

since -6 is obviously not equal to -5, the value of 1 for x is wrong.

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