2017 #4 Free Response Question - AP Physics 1 - Exam Solution

The video tutorial covers question #4 from the 2017 AP Physics One exam, focusing on a low friction slide problem. It explains the setup, analyzes the conservation of energy, and discusses the differences in block velocities and landing distances. The tutorial also provides solutions for Parts A and B, emphasizing the importance of understanding mechanical energy and projectile motion. Additionally, it offers grading insights and exam tips to help students maximize their scores.

What is the main objective of the physics class experiment described in the introduction?

• To test the durability of lab tables

• To measure the friction on different surfaces

• To compare the weights of different blocks

• To design a slide that launches a block horizontally

Why do the blocks not land at the same distance from their respective tables?

• Block two has a larger velocity in the Y direction

• Block one has a larger velocity in the X direction

• Block two has a higher initial velocity in the X direction

• Block one has a higher initial velocity in the Y direction

What is a key point to remember about the grading of the problem?

• Only the final answer matters

• Attempting to use conservation of energy can earn points

• Partial credit is not available

• The problem must be solved without assumptions

In the new experiment, what is the reason both blocks land the same distance from their tables?

• Block one has a higher initial height

• Both blocks have the same kinetic energy at the base of the ramp

• Block two has a steeper ramp

• Both blocks have different velocities in the X direction

Which block hits the floor first in the new experiment and why?

• Block one, because it has a higher initial height

• Block one, because it has a steeper ramp

• Block two, because it has a steeper ramp

• Both blocks hit the floor at the same time

What is the significance of the slides having different shapes in the new experiment?

• It changes the gravitational potential energy

• It alters the mass of the blocks

• It affects the initial height of the blocks

• It results in different accelerations for the blocks

What should students be cautious about when solving physics problems on exams?

• Assuming problems are identical to ones seen before

• Using equations to solve problems

• Focusing only on the final answer

• Ignoring the conservation of energy