A vehicle is driven along a straight horizontal track by a motor which exerts a constant driving...

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A vehicle is driven along a straight horizontal track by a motor which exerts a constant driving force. The vehicle starts from rest at \( t=0 \) and the effects of friction and air resistance are negligible. If the kinetic energy of the vehicle at time \( t \) is \( E \) and power developed by the motor is \( P \), which of the following graphs is/are correct?
(1) \( P \)
(3) \( E \)
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