Lesson: Projectile Motion Physics • 9th Grade

In this lesson, we will learn how to analyze the motion of objects that move horizontally while undergoing constant vertical acceleration.

Lesson Plan

Students will be able to

use the following equations to relate the range, maximum altitude, and time of flight of projectiles to their launch speeds and angles: range = , maximum altitude = , and time of flight = .

Lesson Presentation

Lesson Video

Lesson Explainer

Lesson Playlist

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08:37

Lesson Worksheet

Q1:

A projectile is fired with an initial speed of 28 m/s and has a maximum upward vertical displacement from its launch position of 4.4 m. What angle above the horizontal is the projectile launched at? Give your answer to the nearest degree.

Q2:

A projectile has an initial speed of 25 m/s and is fired at an angle of above the horizontal. What is the time between the projectile leaving the ground and returning to the ground at the same height that it was launched from? Give your answer to one decimal place.

Q3:

A frog jumps from the ground and lands at a point 16 cm horizontally distant from its launch point, moving with constant horizontal velocity. The maximum vertical displacement of the frog above the ground during its leap is 3.6 cm. What is the horizontal velocity of the frog? Give your answer to two decimal places.