University:
University of Pennsylvania
Course:
PHYS 0101 | General Physics: Mechanics, Heat and Sound
Academic year:

2024
Views:

192

Pages:

2
Author:

Prince Sampson

PAL Problem Set 6 (Vectors and Projectile Motion) Always explain your answers and show your work. 1. Determine the numerical values of the x- and y-components of each vector. → → → → 2. Calculate the components S x and S y of the vector S = A − B + C → 3. Find the magnitude and direction of vector S (why use tan and tan-1?) → → → → 4. Sketch vector S by doing the graphical sum of A + B − C . Be careful to maintain the magnitude and direction of each vector. Check that your answers to #2 above → make sense (i.e., are consistent) with your drawing vector S . 5. A rock thrown with speed 7.0 m/s and launch angle 30.0o (above the horizontal) travels a horizontal distance of d = 20.0 m before hitting the ground. From what height was the rock thrown? Use the value g = 9.8 m/s2 for the free-fall acceleration. In the y-direction, which situation do we have? a) Constant Position b) Constant Velocity c) Constant Acceleration In the x-direction, which situation do we have? a) Constant Position b) Constant Velocity c) Constant Acceleration MODEL What simplifying assumptions will you be using to solve this problem? VISUALIZE ● ● ● Draw a motion diagram. Establish a coordinate system for each part of the motion (can you use the same x-axis for both?). List knowns and unknowns for each part of the motion. Identify what you are trying to find. PLAN OF ACTION What steps will you need to take to solve this problem? SOLVE ASSESS Do your numbers seem reasonable? Do you have the correct units and signs?