A.) Riding the hovercraft feels like sitting on a rolling skateboard that is above the ground. I would say to others to definitely expect somewhat out-of-control. The hovercraft won't stop unless unplugged or someone holds it stationary. Riding a skateboard, bike, etc. is different in the fact that friction is absent when the hovercraft glides, whereas a skateboard slows because of the road it rolls on.
B.) I learned that (besides the definition of Newton's 1st Law) that something can be moving and not have any forces acting on it. Also, the more/less weight, the more/less inertia. Equilibrium is when an object's net force is zero.
C.) Acceleration depends on the weight of the object and how difficult it is to exert a force on the object. When being pushed or pulled, an object is accelerating, but as the hovercraft reaches its maximum speed (constant), it does not accelerate.
D.) Based on the hovercraft, constant velocity is attained when the object is moving, but in equilibrium as well. The net force is zero, which means the hovercraft is no longer moved by a force, but by inertia and the continuation of its current state.
E.) Some classmates were harder to stop than others because of their mass. When an object (or person) has more mass, more force must be exerted to start/accelerate, and to stop. This is part of Newton's 2nd Law I think.
CHEERS
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