Submitted by alwaysUseATryCatch t3_zhf860 in CambridgeMA
randomdragoon t1_izmmfl1 wrote
If you can't find a radar gun, you could probably also deduce the speed of things if you take continuous video of them.
alwaysUseATryCatch OP t1_izmp1s8 wrote
Yeah plan B is measuring tape and a stopwatch :D
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