The circumference of the circle is equal to:
Correct answer: A. 2 π r
- A. 2 π r
- B. 2 π r2
- C. π r
- D. π2 r
Explanation
The circumference of a circle is equal to 2 π r.
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Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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