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
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.