Find the tangential and normal components of the acceleration vector. r(t) = (3 + t) i + (t2 − 2t) j

Acceleration can be broken into tangential and normal components, The tangential vector points in the direction which particle is moving and normal vector points in that direction in which curve of that object's path is turning.

Tangential component,

And normal component,

Given

                      = < 3+t , >

            r'(t) = <1 , 2t-2>

            r''(t) = <0,2>

Let's plugin these values in and

               =

               =

               =

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

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the answer is c just got it on ed

step-by-step explanation: