AP Physics 1 - Unit 2 Progress Check: MCQ Part A&B (2025)
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
Given that m3>m2>m1, how do the force F and string tensions Ta and Tb compare? -
(answers)Tb < Ta < F
吗？还是指某个特定的词或概念
？
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
Which of the following is a correct ranking of the normal forces Fn1, Fn2, and Fn3 exerted on
the boxes? - (answers)Fn3 > Fn2 > Fn1
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
, A student is trying to determine the tensions in the strings connecting the boxes. If the
acceleration of the system and the pulling force F are known, which of the following pairs of
equations could be used to find the tensions? - (answers)m3a3 = Tb and m2a2 = Ta - Tb
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box. 吗？还是指某个特定的词或概念
？
Students attach a force probe in the middle of string A to measure Ta and then use a different
force probe to provide the applied force F to the box of mass m1. With the box of mass m3 held
in place by one student, a second student pulls to the left on the force probe that provides the
applied force F. As the second student pulls with a steady force, and with the boxes remaining at
rest, the following pairs of readings from the two force probes are recorded at different times. -
(answers)The two quantities agree within experimental uncertainty but do not exactly agree
numerically.
A hockey player uses a hockey stick to hit a puck such that the stick provides an applied force on
the puck. The puck travels for distance of 0.85m while experiencing the force from the stick. The
puck leaves the stick with a speed of 8.0m/s and travels at constant speed in a straight line along
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
Given that m3>m2>m1, how do the force F and string tensions Ta and Tb compare? -
(answers)Tb < Ta < F
吗？还是指某个特定的词或概念
？
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
Which of the following is a correct ranking of the normal forces Fn1, Fn2, and Fn3 exerted on
the boxes? - (answers)Fn3 > Fn2 > Fn1
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box.
, A student is trying to determine the tensions in the strings connecting the boxes. If the
acceleration of the system and the pulling force F are known, which of the following pairs of
equations could be used to find the tensions? - (answers)m3a3 = Tb and m2a2 = Ta - Tb
Three boxes are pulled to the left by strings with negligible mass on a horizontal surface, as
shown above. The masses of the boxes are m1, m2, and m3, where m3>m2>m1. Friction
between the boxes and the surface is negligible. The figure below shows force diagrams for each
box. 吗？还是指某个特定的词或概念
？
Students attach a force probe in the middle of string A to measure Ta and then use a different
force probe to provide the applied force F to the box of mass m1. With the box of mass m3 held
in place by one student, a second student pulls to the left on the force probe that provides the
applied force F. As the second student pulls with a steady force, and with the boxes remaining at
rest, the following pairs of readings from the two force probes are recorded at different times. -
(answers)The two quantities agree within experimental uncertainty but do not exactly agree
numerically.
A hockey player uses a hockey stick to hit a puck such that the stick provides an applied force on
the puck. The puck travels for distance of 0.85m while experiencing the force from the stick. The
puck leaves the stick with a speed of 8.0m/s and travels at constant speed in a straight line along
