What is the currency for performing work and what is its unit?

The currency for performing work is called : Energy

And Energy's unit of measurement is : Joule

The amount of energy you've inputed will always equal the output.

For example, in order to do a 500 joules of work, you need 500 joules of energy

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.