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# img023 - 77777 77777 25 For Atwood’s Machine what is the...

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Unformatted text preview: 77777 77777 25. For Atwood’s Machine what is the acceleration (in m/sz) of each mass if m1 = 3.0 kg and 7772 = 5.0 kg? (1) 2.5 (2) 5.3 (3) 7.2 (4) 4.9 (5) 9.8 26. For Atwood’s Machine what is the acceleration (in m/SQ) of each mass if m1 = 3.0 kg and 7712 = 10 kg? (1) 2.5 (2) 5.3 (3) 7.2 (4) 4.9 (5) 9.8 27. For Atwood’s Machine what is the acceleration (in m/sz) of each mass if m, = 3.0 kg and m2 = 20 kg? (1) 2.5 (2) 5.3 ,(3) 7.2 , (4) 4.9 (5) 9.8 28. A ball is rolled horizontally off a table with an initial speed of 0.240 m/s. A stop watch measures the hall’s trajectory time from table to the ﬂoor to be 0.300 5. How far away from the table does the ball land? (1) 0.072 m“ (2) 0.144 m (3) 0.288 m (4) 0.512 m (5) 0.981 m 29. A ball is rolled horizontally off a table with an initial Speed of 0.240 m/s. A stop watch measures the ball’s trajectory time from table to the ﬂoor to be 0.600 5. How far away from the table does the ball land? (1) 0.072 m p (2) 0.144 m (3) 0.288 m (4) 0.512 m (5) 0.981 m 30. A ball is rolled horizontally off a table with an initial speed of 0.240 m/s. A stop watch measures the balls trajectory time from table to the ﬂoor to be 1.20 s. How far away from the table does the ball land? (1) 0.072 m (2) 0.144 m (3) 0.288 m (4) 0.512 m (5) 0.981 m 31. Find the acceleration (in m s2) reached by each of the two objects shown in the ﬁgure if the coe cient of kinetic friction between the 7.00 kg object and the plane is 0.290. (1) 3.18 (2) 9.80 (3) 0.290 (4) 12.0 (5) 7.00 32. A block of mass 10 kg slides 5.0 m down a rough inclined plane which makes an angle of 30° above the horizontal. The coefﬁcient of kinetic friction between the block and the inclined plane is 0.2. What is the work (in J) done by normal reaction force on the block? (1) 0.00 (2) 50.0 (3) 10.0 (4) 245 (5) 85.0 33. A plane is moving due north, directly towards its destination. Its airspeed (speed relative to air) is 200 mph. A constant breeze is blowing from west to east at 40 mph. How long will it take for the plane to travel 200 miles north? more than one hour one hour less than one hour more information is needed The plane will not be able to ﬂy Uibwav—I ...
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