K=1/2 M V ^2, are the units of M in grams or kg? and is V m/sec, cm/sec or k/hour?? The question is Kinetic energy of a baseball where mass is 5.25 ozs and V 100miles/hour. I dont know what to convert too,
2006-10-31 15:23:03 · 2 answers · asked by lewisepalmer 2 in Science & Mathematics ➔ Physics
the answed is in joules, so i guess i use kg, meters and seconds
2006-10-31 15:36:59 · update #1
K = 1/2 *m*v^2, unit is Joules so m is in kg, v is in m/s.
So, in your problem, m = 5.25ozs or 0.149kg and v = 100miles/hr or 0.745 m/s
K = 1/2 *(0.149kg) * (0.745m/s)^2 = 0.0413 kgm^2/s^2 or
= 0.0413 joules
2006-10-31 19:08:12 · answer #1 · answered by titanium007 4 · 0⤊ 0⤋
If you look close you'll see that you answered your own question with the problem question, non of the equation perimeters is in metric.
2006-10-31 23:32:08 · answer #2 · answered by tvcarvcr2 2 · 0⤊ 0⤋