Why is the gravitational potential energy of an object 1 meter above the moon's surface less then it's potential energy 1 meter above earth's surface?

the object's mass is less on the moon.
the object's weight is more on the moon.
the object's acceleration due to gravity is less on the moon.
both a and c.

Acar traveling at a constant speed of 22.0 m/s passes a trooper hidden behind a billboard. one second after the speeding car passes the billboard, the trooper sets off in chase with a constant acceleration of 3.50 m/s2. how long does it take the trooper to overtake the speeding car? solve this problem by a graphical method. on the same graph, plot position versus time for the car and the trooper.