SWer of the following and show your work to get full credit) 1. An object is mov

Question

SWer of the following and show your work to get full credit) 1. An object is moving at a constant rate in a horizontal circular path of radius 1 m. If the radial acceleration of the object is 25 m/s2, its speed is: a. 625 m/s b. 25 m/s c. 5 m/s d. 1 m/s 2. In the formula F the quantity G: a. depends on the local value of g b. is a universal constant of nature c. is related to the Sun in the same way that g is related to the Earth d. is greatest at the surface of the Earth 3. If you walk 10 m along a horizontal floor while holding a 5-kg box on your hand, how much work you do on the box? a) 490 J b) 49 J c) 4.9J a) Zero An object moving with a speed of 10 m/s has a kinetic energy of 100 J. Mass of the object is: a. 1 kg b. 2 kg c. 10 kg d. 100 kg 4.

Explanation / Answer

1. Radial acceleration, ac = 25 m/s2 = V2 / R = V2 / 1 m

V = sqrt (25) = 5 m/s ------ C

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