This activity requires them to predict the landing point of a projectile. The students have discussed the independence of horizontal and vertical components of motion prior to doing this activity.
Allow 10 minutes for clean up of materials. Have students perform this activity as the teacher circulates and provides assistance where necessary. A popular version of this activity is called “Bull’s Eye.” Remind students to have read this activity the night prior to coming to this class session so that groups and tasks will be predetermined before entering the lab. Applet: Manipulate the magnitudes and directions of two vectors, and see the effect this has on their vector cross product.ġ3 The teacher should locate or create a projectile motion laboratory activity of the following manner – Use an inclined plane to launch a ball bearing or similar object from desk level into a soup can placed on the floor. A Film loop: "Vector addition: Velocity of a boat", 3:35 min. A Rope with slug(unit of mass) in center is lifted from ends. A Relative velocity: Three electric cars on tracks make chalk line. Applet: Newton's cannon: View projectile motion with the earth's curvature taken into account.ġ2 Vectors A+70+0 X,Y,Z-coordinate system with vector arrows.Ī+70+5 Vector arrows of various sizes and colors fit in wooden bases. A Ballistics car: Ball ejected from rolling car drops back in. A Carbon dioxide propelled rotational device. A Carbon dioxide propelled rocket flies across room on wire. A Rocket is filled with water and compressed air and launched vertically. A Reaction jet: "L" tube rotates as water flows through it. The electromagent is a reasonable magnet for a while after the current is cut as well, so it is necessary to weigh the monkey.ġ1 Projectiles A+50+0 Dropped and shot balls hit bench simultaneously.Ī+50+5 Water projector: Adjustable angle water jet in front of grid. The trigger is wired to the electromagnet so that when the marble shoots out of the blow gun the connection between the battery and the electromagnet is broken. Aim the blow gun by looking down the barrel. If the starting and ending heights are the same, the range of the projectile is 2v*sin(2q)/g.Ĭategory: Mechanics Subcategory: 2-D Motion Classes: Comments: The blow gun is a long metal tube with a tubing connected on one end and a trigger on the other end. Name: Ball on a String Category: Mechanics Subcategory: 2-D MotionĬategory: Mechanics Subcategory: 2-D Motion Classes: Comments: Use the PASCO projectile launcher to fire a small plastic ball. This demonstration is more showy if the Dynamics Cart goes through a tunnel after the ball is shot upwards. The cart must be moving at a constant velocity for this demonstration to work. The ball then follows a trajectory and lands back in the cart. The ball is shot straight up when the cart passes a photogate. For projectile motion the velocity on the x-axis is constant.Ĩ Comments: The ball carrier is attached to a Dynamics CartĬomments: The ball carrier is attached to a Dynamics Cart. For projectile motion the velocity at the maximum height is zero and the acceleration is g. Determine which formula or combination of formulas can be used to solve the problem.Ĥ FUNDAMENTALS 5. Use the trigonometric component method to determine the x and y components of the initial velocity.
MOTION IN 1 D VIDEO EXAMPLES PASCO CAPSTONE FREE
Use the same sign convention as in free fall problems. Use the proper sign for the quantity represented by the symbol in the data table depending on whether the object was initially moving upward or downward. Complete a data table with the information given. 4) use the Pythagorean theorem and simple trigonometry to solve for the magnitude and direction of the resultant.Ģ For problems involving projectile motion:ġ. 3) determine the sum of the x components and repeat for the sum of the y components. 2) use the sign convention and assign a positive sign or a negative sign to the magnitude. B) Trigonometric Component Method: 1) break each vector into x and y components. Three or more Vectors: Use the Polygon Method and measure both the magnitude and direction of the resultant. A) Graphical Method: Two Vectors: Use the Parallelogram Method and measure both the magnitude and direction of the resultant. Use an appropriate scale in representing the vector. Use a protractor and ruler to accurately represent each vector involved in the problem. 1 SOLUTION STEPS MOTION IN TWO DIMENSIONSįor problems involving vector addition or subtraction: 1.
0 kommentar(er)
