A 5.00 kg ball falls from a 2.00 m-high shelf. Just before hitting the floor, what will be its kinetic energy? (g = 9.80 m/s2 and assume air resistance is negligible)

a. 98.0 J
c. 19.6 J
b. 49.0 J
d. 10.0 J

A

Physics & Space Science

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A time-varying horizontal force F(t) = At4 + Bt2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. In the SI system, A has the numerical value 4.50 and B has the numerical value 8.75

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How does increasing the temperature affect a semiconductor?

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Which of the following objects may have organic particles on its surface as a result of the interaction of sunlight with methane in its upper atmosphere?

a. Io b. Titan c. Mimas d. Ganymede e. Callisto

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