please help guys! Detailed solution is needed.
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equation
x = t(t-2) + a(t-2)²
v = dx/dt
x = t² - 2t + a(t² + 4 - 2t)
x = t² - 2t + at² + 4a -2at
dx/dt = 2t - 2 + 2t + 4 - 2
= 4t -4 + 4 = 4t
so first option is incorrect
v = 4t
a = dv/dt
= 4
so option B is incorrect
in option C when t = 0
the x = 4a so option c is incorrect
So, option D is correct
x = t(t-2) + a(t-2)²
v = dx/dt
x = t² - 2t + a(t² + 4 - 2t)
x = t² - 2t + at² + 4a -2at
dx/dt = 2t - 2 + 2t + 4 - 2
= 4t -4 + 4 = 4t
so first option is incorrect
v = 4t
a = dv/dt
= 4
so option B is incorrect
in option C when t = 0
the x = 4a so option c is incorrect
So, option D is correct
Chinmay007:
thanks man!
:)
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Answer: option D
Explanation:
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