1. [2pt] Which statement about the Work-Kinetic Energy Theorem is correct? A) It

Question

1. [2pt] Which statement about the Work-Kinetic Energy Theorem is correct? A) It has nothing to do with Newton's Laws B) It follows from Newton's 3rd Law, 'action equals reaction'. C) It follows from Newton's 2nd Law, F=ma. 2. [2pt] Which statement about Conservation of Momentum is correct? A) It has nothing to do with Newton's Laws. B) It follows from Newton's 2nd and 3rd Law. C) It follows directly from Newton's 2nd Law, F=ma. 3. [2pt] After boarding an airplane, you carry your 14.5-kg suitcase down the aisle to your seat, a distance of 26.0 m. What is the work done by you on the suitcase? A) 377.00 J B) 142.25 J C) 3698.37 J D) 0.00 J E) 255.06 J 4. [2pt] After reaching your seat, you lift your 14.5 -kg suit- case up by 1.70 m to put it into the overhead bin. What is now the work done by you on the suitcase? A) 16.68 J B) 24.65 J C) 0.00 J D) 142.25 J E) 241.82 J 5. [2pt] A student lets a skateboard roll down the ramp from the first level of PG5 to the ground level. Another student drops an identical skateboard from the first level to the ground level. Which of the two skateboards has more work done on it by the gravitational force? A) The skateboard on the ran more work done by grav- itation.

Explanation / Answer

1.
c)

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2.

c)

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3.

D) 0

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4.

e) 241.82 J

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