2022-03-15 来源:
2017年AP物理1(选择题+简答题)真题及答案高清无水印PDF下载
2017年AP物理1选择题真题如下:
1. A blue sphere and a red sphere with the same diameter are released from rest at the top of a ramp. The red sphere takes a longer time to reach the bottom of the ramp. The spheres are then rolled off a horizontal table at the same time with the same speed and fall freely to the floor.Which sphere reaches the floor first?
(A) The red sphere
(B) The blue sphere
(C) The sphere with the greater mass
(D) Neither; the spheres reach the floor at the same time.
2. A 12 kg box sliding on a horizontal floor has an initial speed of 4.0 m/s . The coefficient of friction between the box and the floor is 0.20.The box moves a distance of 4.0 m in 2.0 s. The magnitude of the change in momentum of the box during this time is most nearly
(A) 12 kg•m s
(B) 48 kg•m s
(C) 60 kg•m s
(D) 96 kg•m s
3. The figure above shows two wave pulses on a spring traveling toward each other at time t = 0 . At t = 0.2 s the pulses completely overlap. A student measures the amplitudes at points A, B, and C at the three times shown in the table. Which of the following is the most likely set of values that the student recorded for x, y, and z in the table?
4. A rubber ball with mass 0.20 kg is dropped vertically from a height of 1.5 m above a floor. The ball bounces off of the floor, and during the bounce 0.60 J of energy is dissipated. What is the maximum height of the ball after the bounce?
(A) 0.30 m
(B) 0.90 m
(C) 1.2 m
(D) 1.5 m
5. A sled slides down a hill with friction between the sled and hill but negligible air resistance. Which of the following must be correct about the resulting change in energy of the sled-Earth system?
(A) The sum of the kinetic energy and the gravitational potential energy changes by an amount equal to the energy dissipated by friction.
(B) The gravitational potential energy decreases and the kinetic energy is constant.
(C) The decrease in the gravitational potential energy is equal to the increase in kinetic energy.
(D) The gravitational potential energy and the kinetic energy must both decrease.
2017年AP物理1选择题真题余下省略!
2017年AP物理1简答题真题:
1. (7 points, suggested time 13 minutes)
A student assembles a circuit with four resistors connected to a 15 V battery, as shown above. Let I1 be the current through resistor R1 , I2 be the current through resistor R2 , and so on. The ranking of the resistances of the resistors is R4 > R3 > R2 > R1.
(a) Rank the four currents I1 through I4 in order from greatest to least. If any of the currents are the same,indicate that explicitly.
Ranking:
(b) The student connects a separate voltmeter across each resistor. Let △V1,△V2,△V3,and △V4 be the voltmeter readings across resistors R1 , R2 , R3 , and R4, respectively. The student measures △V1 = 1 V and △V4 = 9 V. Based on these measurements, determine the voltmeter readings △V2 and △V3.
△V2 = ________ △V3 = ________
Briefly explain your reasoning.
(c) The student now connects a wire from point A to point B. When this wire is connected, does the current I1 in resistor R1 increase, decrease, or stay the same?
____ Increase ____ Decrease ____ Stay the same
Briefly explain your reasoning.
2017年AP物理1简答题真题余下省略!
2017年AP物理1(选择题+简答题)真题及答案高清无水印PDF下载,20元有偿!
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