Is the parallel component of the net force on the comet zero or nonzero? Is the

Question

Is the parallel component of the net force on the comet zero or nonzero?

Is the perpendicular component of the net force on the comet zero or nonzero?

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

Is p^, the direction of the comet's momentum, changing or not changing?

At location B:
What is the direction of the gravitational force exerted on the comet by the star?

Is the parallel component of the net force on the comet zero or nonzero?

Is the perpendicular component of the net force on the comet zero or nonzero?

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

Is p^, the direction of the comet's momentum, changing or not changing?

At location E:
What is the direction of the gravitational force exerted on the comet by the star?

Is the parallel component of the net force on the comet zero or nonzero?

Is the perpendicular component of the net force on the comet zero or nonzero?

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

Is p^, the direction of the comet's momentum, changing or not changing?

Explanation / Answer

At location A:

What is the direction of the gravitational force exerted on the comet by the star?

g

Is the parallel component of the net force on the comet zero or nonzero?

zero

Is the perpendicular component of the net force on the comet zero or nonzero?

nonzero

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

zero

Is p^, the direction of the comet's momentum, changing or not changing?

changing

At location B:

What is the direction of the gravitational force exerted on the comet by the star?

f

Is the parallel component of the net force on the comet zero or nonzero?

nonzero

Is the perpendicular component of the net force on the comet zero or nonzero?

nonzero

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

positive

Is p^, the direction of the comet's momentum, changing or not changing?

Changing

At location E:

What is the direction of the gravitational force exerted on the comet by the star?

a

Is the parallel component of the net force on the comet zero or nonzero?

nonzero

Is the perpendicular component of the net force on the comet zero or nonzero?

nonzero

Is d|p|dt, the rate of change of the magnitude of the comet's momentum, positive, negative, or zero?

negative

Is p^, the direction of the comet's momentum, changing or not changing?

changing

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