12/15/2023 0 Comments Find time projectile motion calculator![]() ![]() If you don't have a partner, you could also lay a blanket down to prevent the ball from bouncing, making it easier for you to mark its landing spot. Use the marker to write down the trial number on each piece of tape so you don't forget. To measure the horizontal travel distance, have your partner stand near the end of the launch pathway (out of harm's way) with the masking tape and have them mark the floor with a piece of tape where the bouncy ball lands. If you are using a smartphone, you can set up the camera so that it can see the launch pathway or ask a friend to video your launch. To determine the time-of-flight, you can either take a video and look at the time stamps or use a stopwatch. To find the initial projectile height, use the measuring tape to measure the height of the resistance bands where it is attached to the chair legs. The horizontal travel distance of the projectile (i.e., range).We recommend that you place an object behind the launcher as a reference so you can draw the launcher back the same distance for each shot. In order to make your shots repeatable, you need to pull back the resistance band by the same amount each time. ![]() Making repeatable shots can be challenging because of Hooke's Law the farther you pull back the resistance band, the faster and farther it will shoot because you are storing more potential energy in the band. Make sure the ball doesn't hit any walls – you need the ball to hit the ground uninterrupted after it flies so you can measure the projectile range correctly.Īll good experiments are repeatable. Start off pulling back very lightly and gradually increase the power until you have a good trajectory. Pull back gently on a downward angle, about 45 degrees. Bring your arm behind the launcher and pinch the top and bottom of the bouncy ball, making sure the opening in the resistance band faces forward. Do not put your face directly behind or in front of the line-of-sight to avoid accidentally getting hit in the face. Stand next to the chair and do not set up the shot if anyone is in front of the chair. Spread the resistance band open and place the bouncy ball right in the middle. Never shoot at another person or animal intentionally, and do everything possible to ensure the area is clear. But first, a word on safety: a bouncy ball at high speeds could cause injury, especially damage to the eyes. It's time to refine your launch technique.
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