Asked by zianna
An automobile starts from rest and 110
ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the acceleration?
-when is the acceleration of the object positive and negative?
ft attains a speed of 30 mi/h. In what time has it traveled this distance and the is the acceleration?
-when is the acceleration of the object positive and negative?
Answers
Answered by
Elena
v=at
=>a=v/t,
s=at²/2=v t²/2t=vt/2.
t=2s/v.
positive
=>a=v/t,
s=at²/2=v t²/2t=vt/2.
t=2s/v.
positive
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