![]() ![]() ![]() The only way I can see to get $5.9$ m/s as the speed, is to take $u$ as $49$ m/s AND s as $0.7$ m, although this isn't correct at all, as if we get the net distance, we can't then use any speed that wasn't the definitive initial speed. I then thought I should work out final speed using $u$ as $0$, which would make the total distance travelled $2.5-1.8=0.7$ m, and acceleration being $9.8$ m/ $s^2$, but I end up with the same answer. However, doing it using SUVAT, and assuming acceleration to be $-9.8$ m/s $^2$ and $u$ as $7$ m/s, my final speed works out to be $3.7$ m/s, so clearly my impulse cannot be $2.59$ Ns. For each drop, the height that the bottom of the ball reaches after bouncing off the floor will be recorded as the rebound height Make sure the ball is dropped in the same manner each time and make the best measurement of the rebound height allowed by conditions. It only took the ball to lose a bit of air pressure for the game to be ruined. I successfully managed to compute this, when I solve the problem in terms of $mgh$ and $\fracmv^2$, however, I haven't actually covered that yet in the Mechanics course I'm doing, so I feel I shouldn't do it that way. Exprience of playing football (soccer) as a child. If the answer really is $2.59$ Ns, then the speed has to be $5.9$ m/s. ![]() Record the measurement on your lab sheet. This is called the ball’s rebound height. The final speed is the bit which stumps me. Have your partner observe the height to which the bottom of the ball bounces on the first bounce. The momentum when hitting the ground is therefore $-1.4$ kgm/s. I first calculated the speed at which the ball hits the ground using $v^2= u^2 2as$, which is $7$ m/s. /-1cm will result in no point deduction. You must tell me the rebound height based on your graph. So be aware of the hours if you’re comparing courses when making your decision. AP courses like AP Psychology and AP American Government take slightly fewer hours, about 4-7 hours. The answer in the book I'm using says $2.59$ Ns. Analysis What does our graph show us Is it linear or non-linear Is (0,0) a data point Does the slope tell us anything Does the area tell us anything Time to put your data to the test will choose a random height to drop the ball from. AP Physics typically takes about 5-10 hours of outside-of-class work per week, a time commitment similar to AP Biology or AP Chemistry. Hypothesis: I believe that the bounce of the ball i.e., the bounce height will increase with increase in drop height. I'm doing mechanics and I came across this question: A ball of mass 0.2 kg is dropped from a height of 2.5 m above horizontal ground.Īfter hitting the ground it rises to a height of 1.8 m above the ground.įind the magnitude of the impulse received by the ball from the ground Physics Lab 1 Bouncing Ball Experiment Aim: To study the result of change in drop height on the bounce/bounce height t of a plastic ball on a hard surface. ![]()
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