True or false , if acceleration is negative speed is decreasing

Physics

1 answer:

laiz [17]3 years ago

3 0

Personally based on my knowledge of physics I believe this is true

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Answer: initial velocity: 20 m/s

time taken to complete the turn: 50s

final velocity: 15 m/s

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Answer:

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Answer: Point Z only

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Why is the following situation impossible? Two identical dust particles of mass 1.00 µg are floating in empty space, far from an

Igoryamba

Answer:

This is a conceptual problem so I will try my best to explain the impossible scenario. First of all the two dust particles ara virtually exempt from any external forces and at rest with respect to each other. This could theoretically happen even if it's difficult for that to happen. The problem is that each of the particles have an electric charge which are equal in magnitude and sign. Thus each particle should feel the presence of the other via a force. The forces felt by the particles are equal and opposite facing away from each other so both charges have a net acceleration according to Newton's second law because of the presence of a force in each particle:

$a=\frac{F}{m}$

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