mo7ief Posted March 15, 2022 Posted March 15, 2022 Hi, i'm a teacher. I'm asking myself if i have the time (milliseconds) and accelaration (milligal) from a microbit flying with a waterrocket, can i calculate the speed out of it. How would it need to be done? Should have it in m/s. Thank you!
exchemist Posted March 15, 2022 Posted March 15, 2022 2 hours ago, mo7ief said: Hi, i'm a teacher. I'm asking myself if i have the time (milliseconds) and accelaration (milligal) from a microbit flying with a waterrocket, can i calculate the speed out of it. How would it need to be done? Should have it in m/s. Thank you! Are you a science teacher, then? It seems rather unlikely.
Phi for All Posted March 15, 2022 Posted March 15, 2022 ! Moderator Note Moved from Classical Physics to Homework Help.
swansont Posted March 15, 2022 Posted March 15, 2022 6 hours ago, mo7ief said: Hi, i'm a teacher. I'm asking myself if i have the time (milliseconds) and accelaration (milligal) from a microbit flying with a waterrocket, can i calculate the speed out of it. How would it need to be done? Should have it in m/s. Thank you! Standard physics kinematics equation will give you this. v = at for an object starting at rest, with a constant acceleration. You just have to put this in SI units
mo7ief Posted March 17, 2022 Author Posted March 17, 2022 On 3/15/2022 at 5:09 PM, exchemist said: Are you a science teacher, then? It seems rather unlikely. Well i finished 15 years ago as teacher in biology and sports... Now with STEM that I have to teach it's a lot more than biology alone. I know a lot of calculations but just want to be sure. What better way is there to ask peoples who know a lot more about that subject... On 3/15/2022 at 9:49 PM, swansont said: Standard physics kinematics equation will give you this. v = at for an object starting at rest, with a constant acceleration. You just have to put this in SI units Thank you for this confirmation. Thought about this already but the results seems weird, maybe will wait till they finished their rocket to see the results. Then i will know it's right. Thank you!
swansont Posted March 17, 2022 Posted March 17, 2022 v = at works for constant acceleration; it occurs to me that you didn't specify that (though a constant thrust over a period of time might be happening). If acceleration varies with time you'd integrate. a = dv/dt, so v(t) would be the integral of a(t) dt
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