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melito
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A car with a mass of 1072 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 38.0 s the speed, as given by the above equation, is 18.05 m/s. Calculate the power which the engine must deliver (to compensate for air resistance and rolling resistance) in order to maintain that speed.
This is the problem; but I couldn't solve it. Please help.
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 38.0 s the speed, as given by the above equation, is 18.05 m/s. Calculate the power which the engine must deliver (to compensate for air resistance and rolling resistance) in order to maintain that speed.
This is the problem; but I couldn't solve it. Please help.