Content X Content X https://dcccd.blac x *Lab4.pdf - Lab 4: X *Lab4.pdf : PHY 2( X f Facebook X Microsoft Word - X C O File | /private/var/folders/qn/_Irydbhj5539c_rw8_nv87mm000Ogn/T/com.microsoft.Word/Microsoft%20Office%20Send%20Maildmimddg/2425-La... OR Update G Gmail YouTube Maps Automate the Bori... Introduction to Ma... Programming Assi... M Your CareerUp Ac... M Welcome Home L... New Tab Q Q Macro: Public Fina... S science Microsoft Word - 2425-Lab_3B_Projectile_Motion_w_PhET (13).docx 3 / 6 71% + Range versus launch angle - Experiment 2: Fix vito be constant and fill the table and plot the range for several values of 0. Again, get values from the whole range of angles available to you. You can use the measurement tool - place it on the impact point to read the range, height, and time for the projectile. 0(deg. Range (m) (x-axis) (y-axis) Was your prediction correct? Reset the initial speed to 18 m/s and set the angle to 25 degrees. Move the target so the projectile lands on it. Make a prediction of a different launch angle that will also allow you to hit the target. Predicted launch angle: _ Briefly explain your prediction: Check your prediction with the other members of your group. Come up with a group consensus on the value of the launch angle that will allow the projectile to hit the target. What is your predicted value? Did you successfully hit the target? [ ] Yes [ ] No If not, repeat the process until you successfully predict a value of the launch angle that will allow you to hit the target.(2) 314R&151 1215 X Content X Content X https://dcccd.blac x *Lab4.pdf - Lab 4: X Lab4.pdf : PHY 2( X f Facebook X Microsoft Word - X C O File | /private/var/folders/qn/_Irydbhj5539c_rw8_nv87mm0000gn/T/com.microsoft.Word/Microsoft%20Office%20Send%20Maildmimddg/2425-La... OR Update G Gmail YouTube Maps Automate the Bori... Introduction to Ma... Programming Assi... M Your CareerUp Ac... M Welcome Home L... New Tab Q Q Macro: Public Fina... S science Microsoft Word - 2425-Lab_3B_Projectile_Motion_w_PhET (13).docx 4/ 6 71% + Derive Range Equation: Now you're going to find an equation for the range (defined as the x displacement of the projectile when it reaches y=0) for a cannon firing from y=0. Leave everything as variables, such as vi for the initial velocity, and O for the launch angle. After you are confident in your equation you must be able to predict where the projectile will land on the first try. . Write out an equation that gives the horizontal position of the object as a function of time. 2. Is the total time the object spends in flight determined by what's going on horizontally or what's going on vertically? Come up with an expression for the total time the object spends in flight (the time it takes the object to return to the level from which it was launched), in terms of v, and 0. 3. Substitute your expression from 2 into your equation in 1, which should produce what we call the range equation - an equation that tells you how far horizontally the object travels, in terms of v, and 0. You may find the following relation useful: sinecos0 = 1/2 sin(20) 4. In particular, how does the range depend on vi? Does this match your results from the first experiment? Explain. 5. Does your equation agree with your results from the second experiment? Explain. Adopted from: Boston University Studio Physics - Phet Projectile Motion Exploration page 4