AP Ph 1 u notebook. November 03, Sep 29 9:54 AM. Sep 29 9:54 AM. Sep 29 10:30 AM. Sep 29 9:54 AM. Sep 29 10:30 AM.
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1 2. (I) A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. What is its final displacement from the origin? Assume the blocks are equal length. 2. (I) A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. What is its final displacement from the origin? Assume the blocks are equal length. Sep 29 9:54 AM Sep 29 9:54 AM 2. (I) A delivery truck travels 18 blocks north, 10 blocks east, and 16 blocks south. What is its final displacement from the origin? Assume the blocks are equal length. (I) A net force of 265 N accelerates a bike and rider at 2.30 m/s/ s. What is the mass of the bike and rider together? Sep 29 9:54 AM Sep 29 10:30 AM (I) A net force of 265 N accelerates a bike and rider at 2.30 m/s/ s. What is the mass of the bike and rider together? (I) A net force of 265 N accelerates a bike and rider at 2.30 m/s/ s. What is the mass of the bike and rider together? Sep 29 10:30 AM Sep 29 10:30 AM 1
2 6. (II) What average force is required to stop an 1100 kg car in 8.0 s if the car is traveling at 95 km/h. 6. (II) What average force is required to stop an 1100 kg car in 8.0 s if the car is traveling at 95 km/h. Sep 29 10:35 AM Sep 29 10:35 AM 6. (II) What average force is required to stop an 1100 kg car in 8.0 s if the car is traveling at 95 km/h. 10. (II) How much tension must a rope withstand if it is used to accelerate a 1200 kg car vertically upward at 0.80 m/s/s? Sep 29 10:35 AM Sep 29 10:40 AM 10. (II) How much tension must a rope withstand if it is used to accelerate a 1200 kg car vertically upward at 0.80 m/s/s? 10. (II) How much tension must a rope withstand if it is used to accelerate a 1200 kg car vertically upward at 0.80 m/s/s? Sep 29 10:40 AM Sep 29 10:40 AM 2
3 14. (II) A 75 kg petty thief wants to escape from a third story jail window. Unfortunately, a makeshift rope made of sheets tied together can support a mass of only 58 kg. How might the thief use this rope to escape? Give a quantitative answer. 14. (II) A 75 kg petty thief wants to escape from a third story jail window. Unfortunately, a makeshift rope made of sheets tied together can support a mass of only 58 kg. How might the thief use this rope to escape? Give a quantitative answer. Sep 29 10:53 AM Sep 29 10:53 AM 14. (II) A 75 kg petty thief wants to escape from a third story jail window. Unfortunately, a makeshift rope made of sheets tied together can support a mass of only 58 kg. How might the thief Draw FBD's for the following: 1. The block as you pulled it in Part The block as it slid to a stop in Part Pulling a block up an inclined plane. use this rope to escape? Give a quantitative answer. Sep 29 10:53 AM Oct 1 12:27 PM Oct 1 10:27 AM Oct 1 10:39 AM 3
4 56. (II) A small box is held in place against a rough wall by someone pushing on it with a force directed upward at 28º above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down unless the applied force has magnitude 13 N. What is the mass of the box? 56. (II) A small box is held in place against a rough wall by someone pushing on it with a force directed upward at 28º above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down unless the applied force has magnitude 13 N. What is the mass of the box? Oct 3 9:57 AM Oct 3 9:57 AM 57. (II) Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 30º. (a) What is the minimum value of the coefficient of static friction that will keep the snow from sliding down? (b) As the snow begins to melt, the coefficient of static friction decreases and the snow eventually slips. Assuming that the distance from the chunk to the edge of the roof is 5.0 m and the coefficient of kinetic friction is 0.20, calculate the speed of the snow chunk when it slides off the roof. (c) If the edge of the roof is 10.0 m above ground, what is the speed of the snow when it hits the ground? 57. (II) Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 30º. (a) What is the minimum value of the coefficient of static friction that will keep the snow from sliding down? (b) As the snow begins to melt, the coefficient of static friction decreases and the snow eventually slips. Assuming that the distance from the chunk to the edge of the roof is 5.0 m and the coefficient of kinetic friction is 0.20, calculate the speed of the snow chunk when it slides off the roof. (c) If the edge of the roof is 10.0 m above ground, what is the speed of the snow when it hits the ground? Oct 3 10:18 AM Oct 3 10:18 AM Oct 6 12:07 PM Oct 6 1:09 PM 4
5 AP Ph 1 u notebook Oct 13 12:00 PM Oct 16 11:11 AM Oct 16 11:10 AM Oct 16 11:10 AM Oct 17 12:01 PM Oct 16 11:22 AM 5
6 Oct 16 11:22 AM Oct 16 11:22 AM 6
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