AFNS — AFNS Physics

Motion and Force


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#25

Centripetal force needed for:

A) Circular motion

B) Linear only

C) Rest only

D) Free fall only

Answer:   A
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#26

Friction opposes:

A) Relative motion

B) Gravity

C) Mass

D) Charge

Answer:   A
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#27

Static friction is:

A) Self-adjusting up to limit

B) Always kinetic

C) Zero always

D) Greater than motion always wrong

Answer:   A
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#28

Banking of roads helps:

A) Provide centripetal force component

B) Increase friction only

C) Stop car

D) Reduce gravity

Answer:   A
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#29

Weight W equals:

A) mg

B) ma

C) mv

D) Fd

Answer:   A
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#30

Mass vs weight:

A) Mass scalar constant location

B) Same thing

C) Weight has no gravity

D) Mass changes on moon

Answer:   A
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#31

Free fall acceleration (near Earth):

A) 约 9.8 m/s^2

B) Zero

C) 1 m/s^2

D) 98 m/s^2 always

Answer:   A
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#32

Terminal velocity reached when:

A) Drag equals weight

B) Acceleration max

C) Speed zero

D) Force zero

Answer:   A
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