'20 kg crate' diaporamas de présentation

The net force is in the direction of the applied force.

A sports car accelerates from zero to 30 mph in 1.5 s . How long does it take for it to accelerate from zero to 60 mph, assuming the power of the engine to be independent of velocity and neglecting friction? 1. 2 s 2. 3 s 3. 4.5 s 4. 6 s 5. 9 s 6. 12 s.

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