|
Projectile Motion Practice Problems -Round all Answers to one decimal place if needed -Include Units in your answer (seconds = s, meters =m meters per second = m/s and meters per second per second = m/s2 (use "shift + 6" then 2 for the square on m/s2)> -Show all work in your notes, we will go over these before the exam -Keep questions for when we go over the answers -The test will be some variation of these questions 1. Horizontal Launch (Introductory Level)A marble rolls off a lab bench that is 0.85 m high and lands 1.40 m away from the base of the bench. a) How long is the marble in the air? b) What was its initial horizontal velocity? 2. Angled Launch (Intermediate)A football is thrown at an angle of 37° above the horizontal with an initial speed of 15 m/s. a) How long does it take to reach its highest point? c) What is its total time in the air before hitting the ground (same height)? b) What is the maximum height of the football? 3. Range and Velocity Components (Intermediate)A projectile is launched from level ground and lands 45 meters away after being in the air for 3.0 seconds. a) What is the horizontal component of its initial velocity? b) If it was launched at an angle of 35°, what was the initial speed? 4. Launch from a Cliff (Challenging)A stone is thrown from the top of a 40 m high cliff at a speed of 18 m/s and an angle of 25° above the horizontal. a) How long does it take to hit the ground below? c) What is the impact speed just before it hits the ground? b) What is its horizontal range (distance from the base of the cliff)? d) Which one has the greater range? 20, 70 or same 5. Conceptual / Application>(Comparative Reasoning)Two identical projectiles are launched from level ground at the same speed but at angles of 20° and 70°. a) Which projectile travels higher? b) Which one has the greater horizontal velocity? c) Which one spends more time in the air? |