Home›Lesson Plans›Science›Physics · Grade 11

Projectile Motion: The Parabolic Path

Eleventh graders analyze projectile motion — the curved path of a thrown or launched object — discovering that horizontal and vertical motion are independent, and that a 45° launch gives the greatest range.

Grade 11Mechanics55 minutes1 class period5E ModelExplicit teaching4 StandardsNGSS
Start the Lesson
Assign or share this lesson

Copy link works with Canvas, Schoology, Moodle and any other LMS — paste it in as a resource or assignment.

Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓Explain projectile motion.
  • ✓Separate horizontal and vertical motion.
  • ✓Find range and height.
  • ✓Find the optimal angle.
Essential Question

Throw a ball and it arcs through the air in a smooth curve every time. Why a parabola — and what launch angle sends it the farthest?

0
Lesson Phases
0
Vocabulary Terms
0
Standards Aligned
0
Interactive Task
Explore · Interactive

The Projectile Launcher

Project this and change the launch angle and speed. Watch the parabolic path, and find the angle that sends the projectile farthest!

🎯 Launch a projectile — find the best angle!Try it
Angle: 45°
Speed: 8

The Lesson · 5E Instructional Model (Engage · Explore · Explain · Elaborate · Evaluate)

55 minutes, five moves

Tap any phase to open the teacher moves and student actions.

1

Engage — The Smooth Arc

5 min

A thrown ball always arcs the same smooth way — why?

👩‍🏫 Teacher Moves

  • Toss a ball; observe the path.
  • Ask why it curves.
  • Pose the question.

🎒 Student Actions

  • Watch the arc.
  • Wonder why.
  • Predict a parabola.
2

Explore — Explore the Launcher

12 min

Students investigate.

👩‍🏫 Teacher Moves

  • Send students to the Projectile Launcher.
  • Change angle and speed.
  • Note range and height.

🎒 Student Actions

  • Change angle.
  • Change speed.
  • Note results.
3

Explain — Independent Motions

13 min

Students explain.

👩‍🏫 Teacher Moves

  • Explain horizontal motion.
  • Explain vertical motion (gravity).
  • Explain why the path is parabolic.

🎒 Student Actions

  • Explain horizontal.
  • Explain vertical.
  • Explain the curve.
4

Elaborate — Best Angle

15 min

Students elaborate.

👩‍🏫 Teacher Moves

  • Find the angle for max range.
  • Compare high vs. flat shots.
  • Apply to a real problem.

🎒 Student Actions

  • Find 45°.
  • Compare shots.
  • Apply it.
5

Evaluate — Evaluate

5 min

Students conclude.

👩‍🏫 Teacher Moves

  • Explain projectile motion.
  • State the optimal angle.
  • Hand out the exit ticket.

🎒 Student Actions

  • Explain it.
  • State the angle.
  • Complete the exit ticket.
Standards Alignment

Built to the standards you report on

Aligned to the Next Generation Science Standards (High School Physical Science / Physics).

NGSS
HS-PS2-1

Analyze data to support Newton’s second law describing motion.

NGSS
HS-PS2-2

Use mathematics to predict the motion of objects.

NGSS
HS-PS3-2

Model energy in a moving system.

NGSS
SEP-5

Using mathematics and computational thinking.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Horizontal/vertical motion diagram.
  • Sentence frame: “Gravity affects only the ___ motion.”
  • Toss and observe.

Support & Access

IEP / 504
  • Use the launcher visually.
  • Focus on the 45° result.
  • Compare two angles.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Solve projectile equations.
  • Analyze a horizontally launched projectile.
  • Account for launch height.
Materials

What to gather

  • 📽️Projector / board
  • ⚾Balls to toss
  • 💻The Projectile Launcher
  • 📏Rulers
  • 🧮Calculators
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

projectilean object launched into the airtrajectorythe path of a projectileparabolaa U-shaped curverangethe horizontal distance traveledlaunch anglethe angle above horizontalvertical motionup-and-down motion (affected by gravity)horizontal motionside-to-side motion (constant)gravitythe downward acceleration
Evaluate

Exit Ticket

Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.

QUESTION 1
Why does a projectile follow a parabolic path?
Because it moves horizontally at constant speed while gravity accelerates it downward.
QUESTION 2
What launch angle gives the greatest range (on level ground)?
45°.
QUESTION 3
Does gravity affect the horizontal or vertical part of a projectile’s motion?
Only the vertical part.

Elaborate: horizontal launch.

Have students analyze an object launched horizontally off a cliff, computing how far it travels before landing. A printable projectile-motion sheet is in the Science library.

Study · Flashcards

Study the key terms

Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.

🃏 Projectile MotionFlip
Card 1
Term
Tap to flip →
Meaning
0

Nice work!

Practice · Quiz

Check your understanding

A quick self-check with instant feedback, drawn from this lesson’s key terms.

📝 Projectile MotionQuiz
Score: 0
1 / 6
Question 1
0%

Nice work!

Practice · Worksheet

Printable worksheet

A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.

🖨️ Projectile MotionPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: gravity, horizontal motion, launch angle, parabola, projectile, range, trajectory, vertical motion
  1. an object launched into the air
  2. a U-shaped curve
  3. the downward acceleration
  4. the angle above horizontal
  5. the path of a projectile
  6. the horizontal distance traveled
  7. up-and-down motion (affected by gravity)
  8. side-to-side motion (constant)

Part B · Show what you learned

  1. Why does a projectile follow a parabolic path?
  2. What launch angle gives the greatest range (on level ground)?
  3. Does gravity affect the horizontal or vertical part of a projectile’s motion?
Answer key — Part A: 1) projectile · 2) parabola · 3) gravity · 4) launch angle · 5) trajectory · 6) range · 7) vertical motion · 8) horizontal motion
Part B: 1) Because it moves horizontally at constant speed while gravity accelerates it downward. 2) 45°. 3) Only the vertical part.