What is the Horse-Power Developed by an Engine in 30 Seconds?

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AI Thread Summary
To determine the horse-power developed by a 2-ton motor car accelerating from rest to 30 miles per hour in 30 seconds, the power can be calculated using the formula Power = Work-done/Time taken. The calculations involve converting the mass and velocity into appropriate units and applying the work-energy principle. Despite attempts, some users are struggling to arrive at the correct value of 16.43 horse-power, often yielding larger results. Assistance is being offered for recalculating and verifying the steps taken in the solution. Accurate calculations are essential to confirm the engine's performance.
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Homework Statement



A motor car of mass 2 tons moves from rest with constant acceleration and acquires a velocity of 30 miles/hr in 30 seconds . Show that the horse-power developed by the engine during that time is 16.43 .

Homework Equations



Power = Work-done/Time taken

The Attempt at a Solution



I just can't get the answer to match . I keep getting values much larger than 16.43 !
 
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