Ph101-08&09-2md2

Ph101-08&09-2md2 - Part 1: Choose the right answer...

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Part 1: Choose the right answer 1. A Newton is the force: a) that gives a 1 gm body an acceleration of 1 cm/s 2 b) that gives a 1 kg body an acceleration of 1 m/s 2 c) that gives a 1 kg body an acceleration of 9.8 m/s 2 d) of gravity on a 1 kg body 2. A physics book is suspended on a scale in an elevator, of the following, the scale shows the highest reading when the elevator: a) moves downward with increasing speed b) moves downward with decreasing speed d) moves upward with decreasing speed e) moves upward at constant speed 3. If the block moves with constant speed by means of force P v as shown which of the following must be true: a) P = fr and N = W b) P = fr and N > W c) P > fr and N < W d) P > f and N = W 4. A marble moves along the x-axis. The potential-energy function is as shown in the figure. If the marble is released from rest at position x = 1m then it’s kinetic energy at x = 4m is a) 30 J b) 20 J c) 10 J d) zero 40 30 20 10 1 2 3 4 5 6 m u N W P θ fr W v : weight fr : friction N v : normal
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Ph101-08&amp;amp;09-2md2 - Part 1: Choose the right answer...

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