Newton’s second law: The acceleration (a) of an object is directly proportional to the force on the object (F) and inversely proportional to its mass (m). F < The greater the force, the greater the acceleration
a = -- OR F=ma
M< The greater the mass the less the acceleration

there is the answer

Explanation:

Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. As the force acting upon an object is increased, the acceleration of the object is increased. As the mass of an object is increased, the acceleration of the object is decreased.

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

no sign of dia of fuel cell