samreitz7546 samreitz7546

22-09-2018
Physics

contestada

A sprinter accelerates from rest to 9.00 m/s in 1.38 s. what is her acceleration in (a) m/s2; (b) km/h2?

Respuesta :

happyface012 happyface012

30-09-2018

a) 6.52 m/s^2

b) 23.47 km/hr^2

a) v = v0 + at --> 9 = 0 + a(1.38) --> a = 6.52

b) 6.52 m/s2 * 60 s2 / 1 min2 * 60 min2 / 1 hr2 = 23.47 km/hr2

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