A 25 metric ton train moves toward the south at 70 m/s. At what speed must it travel to have three times its original momentum (to 2 sig figs)?

the first, second, and fifth options

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

watch you tube or play clash royale, mainly clash royale