Reflection: Real World Applications Projectile Prediction! - Section 3: Students Prepare Their Predictions

 

After you teach high school physics for a few weeks, it is clear that most students hate to solve equations without numbers. They want to plug in numbers as soon as possible and this is understandable as numbers are more concrete than a letter that could be anything. However, there is value in having students derive equations without putting in the numbers right away. It is good mathematical practice and it also gives allows us to understand the relationship between variables after the derivation is done (linear, inverse, squared, etc). I tell my students this is more valuable than coming up with a single number one time. We want to know how nature operates, that if we change x, what will happen to y!

As can be seen on the first student solutions, they still struggle with this concept of formula derivation. It takes practice and perseverance and you can see that this group had to make several changes. But they can do it. The second sample shows a very neat and elegant solution. I am sure to share such a solution with the rest of the class.

In the future, I will add a challenge where students can take advantage of their derived formula. Perhaps imagine a situation where the launch velocity was changed and they must redo their calculations in 30 seconds to reposition their catch point.

  Real World Applications: Launcher reflection
Loading resource...
 

Projectile Prediction!

Unit 2: Forces in Two Dimensions
Lesson 4 of 16

Objective: Given a projectile launched with a known starting velocity and angle, students will predict the horizontal position of a bucket to catch it.

Big Idea: For a projectile where air resistance can be ignored, its horizontal velocity is constant and its vertical velocity changes at 9.81 m/s^2

  Print Lesson
1 teacher likes this lesson
Subject(s):
Forces and Newton's Laws, Science, Physical Science, physics, kinematics, Projectile Motion, mathematical modeling, components, Forces
  45 minutes
 
1
2
3
4
Similar Lessons
 
Day 1 of 4--Engineering a Calorimeter: What is a Prototype?
High School Chemistry » Thermodynamics
Big Idea: A prototype is a model that can be tested and refined in order to meet specifications required of a final product; designing a final product that meets a specific function requires multiple iterations and tests along the way.
  Favorites(4)
  Resources(17)
Los Angeles, CA
Environment: Urban
Emilie Hill
 
Sharkweek! Using a Popular Television Series to Develop Science Inquiry Skills and Vocabulary
High School Biology » Unit 2: The Science of Biology
Big Idea: What does science inquiry look like in real life? Students will analyze a Mythbusters experiment linking color to shark food preferences and then create their own experiment using our science inquiry vocabulary
  Favorites(27)
  Resources(18)
Walnut Creek, CA
Environment: Suburban
Maria Laws
 
Friction Lab, Day 1
High School Physics » Force and Acceleration
Big Idea: Students investigate factors that affect friction on sliding wooden blocks.
  Favorites(4)
  Resources(17)
Park Ridge, IL
Environment: Suburban
Anna Meyer
 
Something went wrong. See details for more info
Nothing to upload
details
close