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# Bouncing ball lab

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### Bouncing ball lab

1. 1. Helen Heidel Bouncing Ball Lab In the balloon activity that we did, we can see how work and energy are effect theball. We see that the gravitational potential energy is less at each bounce, since thisenergy is being transformed into kinetic energy. We can see that at the first bounce, thereis the most kinetic energy so the ball is moving the most as the most amount ofgravitational potential energy is transformed into kinetic energy. Since work is equal tochange in kinetic energy, and the kinetic energy changes with time as the ball drops, wecan tell that work was done on the ball. Since the gravitational potential energy changedas well we can tell that work was done because a change in energy means work was done.I saw that work was done on the ball, meaning that there must’ve been a change inenergy, so work and energy was present in this activity.Bouncing Ball Data: Gravitational Total Kinetic and Potential Kinetic Gravitational Time Velocity Height Energy Energy Potential Energy 0.05 -0.005488 1.946662 10.85497441 8.56861E-06 10.85498298 0.1 -5.72E-03 1.946936 10.85650452 9.29754E-06 10.85651382 0.15 -0.0063112 1.94721 10.85803463 1.1332E-05 10.85804596 0.2 -0.00762222 1.947485 10.85956474 1.6529E-05 10.85958127 0.25 0.001219556 1.948034 10.86262496 4.23141E-07 10.86262538 0.3 0.054727556 1.948582 10.86568518 0.000852107 10.86653729 0.35 0.235526667 1.948034 10.86262496 0.015782015 10.87840697 0.4 0.578526667 1.932393 10.77540873 0.095220188 10.87062892 0.45 1.018786222 1.893977 10.56119343 0.295289767 10.8564832 0.5 1.495632444 1.831414 10.21232852 0.636402718 10.84873123 0.55 1.983759556 1.744703 9.728813984 1.119593412 10.8484074 0.6 2.485606667 1.633571 9.109119725 1.757709423 10.86682915 0.65 2.978154667 1.495822 8.341004867 2.523345785 10.86435065 0.7 3.480154222 1.33667 7.453541484 3.445714185 10.89925567 0.75 3.923157778 1.144042 6.37940477 4.378786997 10.75819177 0.8 4.373936 0.944827 5.268545433 5.44285944 10.71140487 0.85 4.880204 0.712685 3.974072982 6.775763263 10.74983624 0.9 4.923040889 0.447889 2.497517527 6.895236338 9.392753865 0.95 3.773 0.171294 0.955167372 4.050008001 5.005175373 1 0.313883111 -0.05701 -0.317883549 0.028029682 -0.289853867 1.05 -2.77098267 0.160592 0.89549311 2.184489135 3.079982246 1.1 -3.39478533 0.35377 1.972690044 3.278739442 5.251429486 1.15 -3.19203422 0.526367 2.935128781 2.898793964 5.833922745 1.2 -2.69018711 0.673446 3.755267355 2.058956854 5.814224209 1.25 -2.15144844 0.798572 4.452997186 1.316873801 5.769870988 1.3 -1.48953467 0.89763 5.005366636 0.631223997 5.636590634 1.35 -1.26025822 0.921503 5.138486144 0.451857349 5.590343493 1.4 -1.03540267 1.023306 5.706156687 0.305000695 6.011157382 1.45 -0.37394622 1.051569 5.863757943 0.039783279 5.903541221
2. 2. 1.5 0.164944889 1.051843 5.865288052 0.007740339 5.8730283911.55 0.623497778 1.029068 5.738288982 0.110599227 5.848888208 1.6 1.083117778 0.991201 5.527133901 0.333759502 5.8608934031.65 1.589538222 0.923424 5.149196909 0.718826736 5.868023644 1.7 2.084068 0.831226 4.635080191 1.235680067 5.8707602581.75 2.573872 0.714606 3.984783747 1.884760457 5.869544204 1.8 3.070231111 0.573838 3.199837686 2.681787777 5.8816254631.85 3.441890667 0.409198 2.281772118 3.370360932 5.65213305 1.9 3.318410667 0.217393 1.212225731 3.132871141 4.3450968721.95 1.479016 -0.01283 -0.071535955 0.622340429 0.550804475 2 -1.14028444 0.026136 0.145739563 0.369920731 0.5156602942.05 -2.29566089 0.182818 1.019431962 1.499331762 2.518763724 2.1 -2.25175689 0.312061 1.740113433 1.442531385 3.1826448182.15 -1.80311289 0.416882 2.324615178 0.924970978 3.249586156 2.2 -1.37093289 0.487128 2.716323154 0.534705512 3.2510286662.25 -0.99409022 0.550789 3.071308507 0.281147273 3.352455779 2.3 -0.52105511 0.592223 3.302355008 0.077241303 3.3795963112.35 -0.00716489 0.604846 3.372740035 1.4605E-05 3.37275464 2.4 0.494682222 0.591674 3.299294789 0.069620138 3.3689149272.45 0.981132444 0.55463 3.092730036 0.273865639 3.366595675 2.5 1.463161778 0.493439 2.751515667 0.609069659 3.3605853262.55 1.950526667 0.40865 2.2787119 1.082395692 3.361107591 2.6 2.359230222 0.29889 1.666668188 1.58351768 3.2501858682.65 2.404963556 0.163336 0.910794203 1.645505241 2.556299444 2.7 1.382671111 0.005556 0.030981367 0.54390124 0.5748826072.75 -0.46769956 -0.02051 -0.114379014 0.062232348 -0.052146667 2.8 -1.59822756 0.091992 0.51296579 0.72670726 1.2396730512.85 -1.62109422 0.195166 1.08828688 0.747650773 1.835937652 2.9 -1.21330533 0.267334 1.49070562 0.418815247 1.9095208672.95 -0.75307556 0.313707 1.749294089 0.161346434 1.910640523 3 -0.28735778 0.342794 1.911485672 0.023492443 1.9349781153.05 0.203513333 0.344166 1.919136219 0.011783329 1.930919548 3.1 0.67914 0.32139 1.792137148 0.131220259 1.9233574083.15 1.148668889 0.276114 1.539669117 0.375380742 1.915049859 3.2 1.578714667 0.206417 1.15102136 0.70907073 1.860092093.25 1.760885778 0.112846 0.629254096 0.882154477 1.511408572 3.3 1.341663556 0.00391 0.021800712 0.512117382 0.5339180933.35 -0.05442267 -0.07567 -0.42193098 0.00084264 -0.42108834 3.4 -1.08891067 0.029703 0.165630984 0.337339172 0.5029701563.45 -1.09180711 0.087876 0.490014151 0.339136167 0.829150319 3.5 -0.777924 0.147146 0.820517756 0.172169656 0.9926874113.55 -0.26159467 0.171294 0.955167372 0.019468838 0.974636211 3.6 0.220434667 0.171294 0.955167372 0.013824265 0.9689916383.65 0.830669778 0.149067 0.831228521 0.196308494 1.027537014 3.7 1.489077333 0.099675 0.55580885 0.630836446 1.1866452963.75 2.448257778 0.033545 0.187052514 1.705283369 1.892335882 3.8 0.868323556 -0.29025 -1.618476437 0.214508959 -1.4039674773.85 -1.28434444 -0.08472 -0.472424586 0.469294315 -0.00313027 3.9 -1.12000933 -0.0249 -0.138860763 0.356882748 0.2180219853.95 -0.76588089 0.024215 0.135028798 0.166880171 0.301908969
3. 3. 4 -0.19817778 0.051381 0.286509617 0.011173576 0.297683193 4.05 0.305041333 0.044246 0.246726776 0.026472786 0.273199562 4.1 0.760697778 0.014886 0.083005083 0.164629086 0.247634168 4.15 1.124277778 -0.02765 -0.154161856 0.359608148 0.205446293 4.2 1.565452 -0.08994 -0.501496662 0.69720707 0.195710408 4.25 0.383245333 -0.27406 -1.528199989 0.041786502 -1.486413487 4.3 0.119516444 -0.07402 -0.412750324 0.004063849 -0.408686475 4.35 -0.19878756 -0.28915 -1.612356 0.011242442 -1.601113557 4.4 -0.11128444 -0.03368 -0.18782426 0.003523313 -0.184300947 4.45 0.076679556 -0.2757 -1.537380645 0.00167279 -1.535707855 4.5 -0.591332 -0.09021 -0.503026772 0.09948212 -0.403544651 4.55 -0.06158756 -0.14619 -0.815169065 0.001079116 -0.814089948 4.6 -0.35351867 -0.13219 -0.737133491 0.035555515 -0.701577976 4.65 -0.26250933 -0.09487 -0.529038629 0.019605222 -0.509433407 4.7 0.058691111 -0.08747 -0.487725679 0.000980002 -0.486745677 4.75 0.299705778 -0.10942 -0.610134421 0.025554801 -0.58457962 4.8 0.274552444 -0.13055 -0.727952836 0.021445338 -0.706507497 4.85 0.354890667 -0.12588 -0.701940978 0.035832031 -0.666108947 4.9 0.0117992 -0.19091 -1.064576877 3.96084E-05 -1.064537269 4.95 -0.37989156 -0.13055 -0.727952836 0.041058355 -0.68689448 5 -0.35458578 -0.11957 -0.666748464 0.03577049 -0.630977974Balloon Lab Analysis 1. At the beginning, kinetic energy is at zero, and once it hits approximately 0.95 seconds, the kinetic energy is at its maximum of 7 Joules. Overtime, there seems to be less kinetic energy. At different points of the ball’s bounce, there is less kinetic energy. 2. At the first bounce, the ball’s kinetic energy is the greatest (0.95 seconds). At the last bounce, or when the ball stops bouncing its kinetic energy is the least (4.4 seconds). These points have highest and lowest amount of kinetic energy because at the first bounce, the ball is moving the most, and almost all of its energy is conserved, but every time it hits the ground, its energy is transformed into thermal energy and so it loses its kinetic energy. We see the difference in Kinetic Energy when we notice that the ball stops bouncing. 3. At the beginning of the graph, before its first bounce, the ball’s gravitational potential energy is at its highest in the graph. Then it starts losing its gravitational potential energy at each bounce. The amount of gravitational potential energy in the ball changes at different points; it loses its gravitational potential energy gradually at each point on the graph. 4. Before the first bounce, the ball’s gravitational potential energy is at its greatest. The ball’s gravitational potential energy is at its least when the ball stops bouncing. Before the ball bounces, it has the most gravitational potential energy because its held up and it hasn’t transformed its energy into any other energy yet, but when it starts bouncing that energy is transformed into kinetic energy, and so there is less gravitational potential energy. We see the difference of gravitational potential energy when the ball stops moving; when it’s closer to the core of the earth. This is the same with the ball’s speed, as it slows down its gravitational potential energy is less.
4. 4. 5. The graph of the ball’s total energy, like the graph of kinetic energy and gravitational potential energy, goes down at every point. The total energy is less at every point in the ball’s bounce.6. I notice that the total energy is the same. This does make sense because total energy can never be created nor destroyed. This is why the total energy is the same at those points in the bounce.7. When the ball hits the ground, its total amount of energy is 0. This does make sense because at that point there is no energy in the ball, it has been transformed into some other sort of energy and transferred through law of conservation of momentum.8. The total amount of energy that a ball has from one bounce to the next changes, it becomes less. This does make sense because the energy from the ball can be transferred to the earth using the law of conservation of moment