An aircraft, traveling northward, lands on a runway with a speed of 77 m/s. once it touches down, it slows to 6.3 m/s over 705 m of runway. what is the average acceleration (magnitude and direction) of the plane during landing (in m/s2)

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.