A cart has a fan on it and rests on a horizontal frictionless surface. A cart ha

Question

A cart has a fan on it and rests on a horizontal frictionless surface. A cart has a fan on it and rests on a horizontal frictionless surface. 22. A cart has a fan on It and it rests on a horizontal frictionless surface. Then the fan is turned on the cart moves to the left (situation A). If a sail is mounted on the cart (situation B), what is true about the subsequent motion of the cart? SAIL FA Cart moves in this di rection Air moves in this di rection CART CART Situation A Situation B a. The cart will come to a complete stop because the net force acting on the cart is zero. b. The cart will continue moving with the same velocity it had because the net force acting on it is zero c. The cart will slow down, stop, and speed up because the net force acts on the direction opposite to the motion. d· The cart will continue movi ing in the same direction at constant larger acceleration because the net force increased

Explanation / Answer

now momentum of air is to the left. (force on cart is to the right)

so cart will start slowing down.  

and it will stop after some time then start moving in right direction.

Ans/(c)

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