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s = -t³ + 2t² - 2t, 0 ≤ t ≤ 2 Find the body's speed and acceleration at the end of the time interval. *

A) -6 m/sec, -8 m/sec²
B) 6 m/sec, -8 m/sec²
C) 6 m/sec, -2 m/sec²
D) 2 m/sec, 0 m/sec²

Sagot :

Songgyidn

Answer:

A

Step-by-step explanation:

the end of interval is t=2

v=s'= -3t^2+4t-2

v(2)= -3(2^2)+4(2) -2

v(2)=-12+8-2

v(2)= -6m/s

so tje ans is A

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