Ok, this is the symptom that people who wear flip flops or sandals have.

That is flip flops or sandals have too much friction on the floor.

So when a person in flip flops etc walks, they may fall or nearly fall because the flip flops have strong friction on the floor & may cause a force that stops that person moving forward, but since the person is walking so he has a momentum of moving forward.

These 2 opposite forces may make him fall down.

trip [intransitive] to catch your foot on something and fall or almost fall

She tripped and fell.

trip over/on something Someone will trip over that cable.

(figurative) I was tripping over my words in my excitement to tell them the news.

trip over/up Be careful you don't trip up on the step.

So, may I say?

My toddler tripped over the floor in her sandals

People often trip over a cable or s step, I am not sure if people do trip over the floor?

We may say "trip on the floor" but that may cause confusing because people may think "trip over a cable on the floor"

Ok, this is the symptom that people who wear flip flops or sandals have.

That is flip flops or sandals have too much friction on the floor.

So when a person in flip flops etc walks, they may fall or nearly fall because the flip flops have strong friction on the floor & may cause a force that stops that person moving forward, but since the person is walking so he has a momentum of moving forward.

These 2 opposite forces may make him fall down.

trip [intransitive] to catch your foot on something and fall or almost fall

She tripped and fell.

trip over/on something Someone will trip over that cable.

(figurative) I was tripping over my words in my excitement to tell them the news.

trip over/up Be careful you don't trip up on the step.

So, may I say?

My toddler tripped over the floor in her sandals

People often trip over a cable or a step, I am not sure if people do trip over the floor?

We may say "trip on the floor" but that may cause confusing because people may think "trip over a cable on the floor"