1 of 16 Part B Constants A web page designer creates an animaton in which a dot

Question

1 of 16 Part B Constants A web page designer creates an animaton in which a dot on a computer screen has a position of Find the instantaneous velocity at t 0. Give your answer as a pair of components separated by a comma.For example, if you think the x component is 3 and the y component is 4, then you should enter 3,4. Express your answer using two significant figures 4.8,5.8 cm/s Submit x Incorrect, Try Again; attempts remaining: no points deducted Part C Fnd the Instantaneous velocity att1.0 component is 4, then you shoold enter ,4.Express your answer using two signilficant figures Give your answer as a pair of components sepwated by a comma For example, if you think the x component is 3 and the y Submit incorrect; Try Again; 5 attempts remaining: no points deducted -Part D Find the instantaneous velocity at2.0 Give your answer as a pair of components For example, i you thik the x component is 3 and the y 5.8,7.528 incorrect Try Again rem

Explanation / Answer

here,

r = ( 4.2 cm + 2.9 * t^2) i + ( 4.8 t) j

differentiating the equation for v

v = dr/dt

v = ( 5.8 t i + 4.8 j) cm/s

B)

at t = 0

the instantaneous velocity , v(0) = ( 5.8 * 0 i + 4.8 j) cm/s

v(0) = ( 0 i + 4.8 j) cm/s

C)

at t = 1 s

the instantaneous velocity , v(1) = ( 5.8 * 1 i + 4.8 j) cm/s

v(1) = ( 5.8 i + 4.8 j) cm/s

D)

at t = 2 s

the instantaneous velocity , v(2) = ( 5.8 * 2 i + 4.8 j) cm/s

v(2) = ( 11.6 i + 4.8 j) cm/s

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