Motion in Two Dimensions | Projectile Motion Experiments

Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
Motion in Two Dimensions | Projectile Motion Experiments
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Product Description
In the first experiment, students push two pennies off a table: one simply falls and the other is launched horizontally. Regardless of how far or fast the one penny is launched, both hit the ground simultaneously. This simple demonstration shows that horizontal speed and vertical acceleration are independent. This surprising fact is fundamental to understanding projectile motion.

In the second experiment, students prop a table or desk so that it slants and then set up a ramp perpendicularly. When a marble is rolled down this ramp it gains horizontal speed and when it rolls onto the slanted table, it gains vertical acceleration. Combining these two motions results in the classic parabolic curve of projectile motion. Wetting the ball makes a track of its motion so students can clearly see its shape. Continually rolling the ball down the ramp demonstrates the repeatability of the experiment.

Students can independently adjust the horizontal and vertical speeds to show how each affects the resulting parabolic path and begin to understand that the shape of falling objects is due to constant horizontal speed combined with accelerating vertical speed.

By starting with the scientific phenomena, you'll be intrigued and excited to dig deeper into the why’s and how’s of each scientific concept. Beautifully illustrated and well laid out, these lab activities are easy to use from the very first page. Experiments are clearly organized and written to the student so they do not need to be pre-digested by a teacher before beginning. Helpful tips throughout the experiments and the Teacher Notes leave the reader in no doubt about how to perform or understand an experiment. Designed for students and optimized for teachers, these labs will engage and fascinate students. Scaffolded writing prompts allow students of different abilities to engage with the same content. Both the teacher and the student are addressed so no additional books are needed. Engaging Science Labs are useful for classroom or homeschool environments.

Concepts Addressed
• All objects fall at the same rate whether or not they’re moving horizontally.
• A thrown object makes a parabolic path.
• Projectile flight can be steeper or gentler but is always parabolic.

Materials Needed
steel ball or marbles, large pieces of newsprint, cup of water, grooved ruler, coins

Answer Key
Extensive teacher notes address the many questions that come up. You shouldn’t have to do outside research on this topic unless you want to.

Time Required
This first lab takes about 20 mins, the second will take about 45 minutes but can take longer.

Student Sheets
• Scaffolded writing prompts & lab reporting

Other resources
Click here to see a video of these two labs:
Video: Motion in Two Dimensions 2D | Two Projectile Motion Experiments

Click here to see companion curricular pieces:
Activities on Motion (Newton's Laws)

NGSS
MS-PS2-2

Virginia VA SOL
PS.10 a, b, c

Texas TEKS
Grade 6: 8B
Grade 8: 6A, 6B, 6C

Connect with me…
Click here to visit my website to find out about teaching ideas and resources.
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Total Pages
10 pages
Answer Key
Included
Teaching Duration
1 hour
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