Question: You observe three carts moving to the left. Cart A moves to the left at nearly constant speed. Cart B moves to the left, gradually speeding up. Cart C moves to the left, gradually slowing down. Which cart or carts, if any, experience a net force to the left?

Answer: Cart B experiences a net force to the left.

Which Cart Experience a Net Force to the Left?

13 Dec 2021

Explanation:

Cart A: For Cart A, the speed is constant, which means there is no acceleration because acceleration is the rate of change of velocity. Therefore, there is no net force acting on Cart A.

Cart B: Cart B is gradually speeding up as it moves to the left. This change in velocity in the left direction indicates that there is acceleration towards the left. According to Newton's second law of motion, Force = mass x acceleration, there is a net force in the left direction acting on Cart B.

Cart C: Cart C is gradually slowing down as it moves to the left. This decrease in velocity results in negative acceleration or deceleration. Therefore, there is a net force towards the right, opposing the motion of Cart C.

In conclusion, only Cart B experiences a net force to the left due to its acceleration in the left direction. Cart A does not experience a net force as its speed is constant, and Cart C experiences a net force towards the right due to its deceleration.

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