2022-03-15 来源:
2015年AP物理1(选择题+简答题)真题及答案高清无水印PDF下载
2015年AP物理1选择题真题如下:
1.In which of the following situations is the kineticenergy of the object decreasing?
(A) A sphere is dropped from a building.
(B) A satellite is moving in a circular orbitaround Earth.
(C) A baseball is heading upward after beingthrown at an angle.
(D) An elevator is moving upward at a constantvelocity.
2.Two protons are held a distance d apart. Theelectrostatic force and the gravitational force that one proton exerts on the other are Fe and Fg,respectively. Which of the following correctlycompares the magnitude and direction of theseforces?
3.A 2 kg object traveling at 5 m/s on a frictionless horizontal surface collides head-on with andsticks to a 3 kg object initially at rest. Which ofthe following correctly identifies the change intotal kinetic energy and the resulting speed of theobjects after the collision?
4.A stone of mass m is thrown upward at a 30°angle to the horizontal. At the instant the stone reaches its highest point, why is thestone neither gaining nor losing speed?
(A) Because the acceleration of the stone at thatinstant is zero
(B) Because the net force acting upon the stone at that instant has magnitude mg
(C) Because the angle between the stone’s velocity and the net force exerted upon the stone is 90°
(D) Because the stone follows a parabolic trajectory and the peak of the trajectory is where the parabola has zero slope
5.A small cart is rolling freely on an inclined ramp with a constant acceleration of 0.5m/s2 in the -x-direction. At time t=0, the cart has a velocity of 2.0m/s in the +x-direction. If the cart never leaves the ramp, which of the followingstatements correctly describes the motion of the cart at a time t>5s?
(A) The cart is traveling in the +x-direction and is slowing down.
(B) The cart is traveling in the +x-direction and is speeding up.
(C) The cart is traveling in the -x-direction and is slowing down.
(D) The cart is traveling in the -x-direction and is speeding up.
2015年AP物理1选择题真题余下省略!
2015年AP物理1简答题真题:
1. (7 points, suggested time 13 minutes)
Cart A has mass M and is released from rest at a height 2H on a ramp making an angle 2θ with the horizontal, as shown above. Cart B has mass 2M and is released from rest at a height H on a ramp making an angle θ with the horizontal. The carts roll toward each other, have a head-on collision on the horizontal portion of the ramp, and stick together. The masses of the carts’ wheels are negligible, as are any frictional or drag forces.
(a) Indicate whether the carts remain at rest, move to the left, or move to the right after the collision.
____ Remain at rest ____ Move to the left ____ Move to the right
Explain how you arrived at your answer.
(b) Consider the time interval from when the two carts are released until just after they collide.
____Increases ____Decreases ____Remains the same
____Increases ____Decreases ____Remains the same
2015年AP物理1简答题真题余下省略!
2015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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