A light plane must reach a speed of 39 m/s for takeoff. How long a runway is needed if the (constant) acceleration is 3.1 m/s2

What is the mass of the same rock on the earth

Question 1 (5 pts): what is the maximum distance for which you can you resolve the two individual headlights of an on-coming truck as two separate lights rather than one if the headlights are separated by 2.00 m and your eye has a diameter of 1.00 centimeter? assume a wavelength of 500 nm.

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation