A helium-filled balloon is tied to the floor of a car moving on a horizontal road.
Statement I:
When the car accelerates forward, the balloon leans forward, toward the windshield.
Statement II:
The air piles up toward the rear under the acceleration, and the balloon is buoyed toward the front.

Question

A helium-filled balloon is tied to the floor of a car moving on a horizontal road.

Statement I:

When the car accelerates forward, the balloon leans forward, toward the windshield.

Statement II:

The air piles up toward the rear under the acceleration, and the balloon is buoyed toward the front.

TestHub · Accepted Answer

The balloon moves opposite to the way the air is thrown, so forward acceleration sends it forward. Both statements are true. Option A.

Physics - NLM Question with Solution | TestHub