Physics Review Question

Unit: Mechanics
Year: 1996 Question#: 15
Question: An inflated balloon released from rest moves horizontally with velocity v. The velocity of the balloon is most likely caused by
(1 ) action-reaction
(2 ) centripetal force
(3 ) gravitational attraction
(4 ) rolling friction

What is this question really asking?


Explanation by: Eric D (partly)

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Answer 1
action reaction

CORRECT

Newton's third law says forces always act in pairs on different objects. When the balloon is released we have the force of the balloon on the air which accelerates the air and the force of the air on the balloon accelerating the balloon. return to top























Answer 2
centripetal force

INCORRECT
Centripetal force is the force which keeps an object moving in a circular path. return to top



























Answer 3
gravitational attraction

INCORRECT

gravitational attraction is the force of attraction that exists between masses return to top


























Answer 4
rolling friction

INCORRECT

rolling friction is the force opposing the motion of one body that is rolling over another body. return to top


























What's this question really asking?

What topic is related to the force causing the balloon to move? return to top

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