cant figure out how to get the answer

Post by **answerhappygod** » Fri Jul 08, 2022 6:20 am

: Cant Figure Out How To Get The Answer 1 (36.93 KiB) Viewed 37 times

: Cant Figure Out How To Get The Answer 2 (56.92 KiB) Viewed 37 times

H (m) .970 Part C Re (m) 4.166 Rex (m) 2.324 Part D H (m) .970 ds English (United States) R (m) 2.13 Rh (m) 4.36 R₁ (m) 2.388 X (m/s²) +4.86 Xhe Accessibility: Good to go V (m/s) 4.79 Percent Difference (%) 4.45 Percent Difference (%) 2.34 Percent Different (%) Focus
1 of 2 Projectile Motion Experiment Objective: The objective is to study projectile motion and to determine the initial velocity of a spring projectile launcher using appropriate kinematics equations and data for range and height of fall. Apparatus: Projectile launcher, 25mm plastic ball, meter stick, tape measure, paper, lab jack, table clamp. Procedure: Part A Place the spring projectile launcher on the table set for horizontal (0°) and clamp the base so that muzzle is at the edge of the table. Put the yellow ball in the launcher and cock it to the maximum range position using the ram rod. Fire the ball once to note where it strikes the floor, then tape a piece of paper over that spot so that the landing position of the ball may be found for future firings. Now fire the ball three times hitting the paper and note the center of the pattern on the paper. Measure the height of the ball at the point where it leaves the muzzle, and the range (horizontal travel distance) using the tape measure, from the point directly below the point where the ball leaves the launcher. Using the appropriate kinematics equations, calculate the muzzle velocity of the ball. Use the average value of the horizontal range for the three shots. Part B Change the muzzle velocity of the projectile by cocking the ball to the second position from the end of the barrel using the ram rod and repeat part A of the experiment. Part C Place the launcher on the floor and adjust the launching angle to 45 above the horizontal and also adjust the lab jack so that its upper surface is level with the end of the launcher barrel. Fire the launcher from maximum spring cocking position noting where the ball hits the floor, and then place the lab jack at this approximate position and fire so as to land the ball on top of the lab jack. Place a sheet of paper on the lab jack at this position and fire three times noting the center of the pattern where the pall hits the top of the lab jack. Measure the horizontal distance between the muzzle position and the center of the pattern where the ball landed. Record this range. Calculate the theoretical value of range using the muzzle velocity from part A and the firing angle, and compare it to the actual range. Repeat this, firing the ball from the second cocking position. Part D Place the launcher on the table, adjust the angle of firing to 30, and fire (from maximum spring compression) the ball onto the floor three times. Determine the horizontal distance from firing position to landing position, and the vertical distance from the floor to the firing position. Compare the experimental value of the horizontal landing position, x, to the theoretical position.