Scientific measurement - 1 | Chemistry and the Scientific Method

Calculate the kinetic energy of sprinter (85.2 kg) moving at 38.0 km.h-1.

Ek12 mv2    with v = speed in m.s-1


38 km.h-1 = 38 km 1 hour x 1000 m1 km x 1 hour3600 s = 10.6 m.s-1

 

Ek = 12 x 85.2 x 10.62 = 4.79 x 103 J