air enter a hot air furnace at 7oc and leave at 77 oc if the pressure does not change each entering cubic meter of air expands to

My answer is opptionc, just check with anyone else

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.

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )