Duplicate Question
The question on this page has been marked as a duplicate question.
Original Question
A car with a mass of 1264 kg is coasting in neutral on a straight,level road. It slows down, and its speed as a function of tim...Asked by John
A car with a mass of 1264 kg is coasting in neutral on a straight,level road. It slows down, and its speed as a function of time is given by the equation:
v(t) = a − bt + ct2
Constant Value Units
a 26.8 m/s
b 0.310 m/s2
c 2.10*10^-3 m/s2
At a time of 36.0 s the speed, as given by the above equation, is 18.36 m/s. Calculate the power which the engine must deliver (to compensate for air resistance and rolling resistance) in order to maintain that speed.
v(t) = a − bt + ct2
Constant Value Units
a 26.8 m/s
b 0.310 m/s2
c 2.10*10^-3 m/s2
At a time of 36.0 s the speed, as given by the above equation, is 18.36 m/s. Calculate the power which the engine must deliver (to compensate for air resistance and rolling resistance) in order to maintain that speed.
Answers
Answered by
Elena
a=dv/dt= -b+2ct =-0.31+2.1•10⁻³•36=
=-0.2344 m/s²
P=Fv=ma•v = 1264•0.2344•18.36 = 5439.7 W
=-0.2344 m/s²
P=Fv=ma•v = 1264•0.2344•18.36 = 5439.7 W
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.