Rubber band
A belt
bracelet
balloons
headband
Answer:
v₂ = 16 m/s
Explanation:
We can use the continuity equation, which is as follows:

where,
A₁ = Area of inlet = πd²/4
A₂ = Area of outlet = π(d/2)²/4 = πd²/16
v₁ = velocity at inlet = 4 m/s
v₂ = velocity at outlet = ?
Therefore,

<u>v₂ = 16 m/s</u>
A complete loop/ring of wire
The answer is A because it describes both toy cars
Centre of Mass then axis of rotation and then moment of inertia. This was the toughest question for your level... happy to help ^_^. It was purely experimental question.