At takeoff, an airplane must reach 55 m/s in order to leave the ground. If it takes the airplane 23 seconds to reach this speed, what is the minimum length that the runway
needs to be in order for the plane to reach takeoff speed?

You are working in the lab and are working with the same element but with varying isotopes of the element. you are working with c-11, c-13, c-14, and c-15. what is the average atomic mass of this element? (use periodic table) a- 12 b-15 c-14 d-13