A tennis ball is served horizontally at

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

250\,\text{g}

tennis ball is served horizontally at

72\,\text{km}\,\text{h}^{-1}

. Determine its translational kinetic energy in joules, expressed to two significant figures. (a)

4.0\times10^{1}\,\text{J}

(b)

1.0\times10^{2}\,\text{J}

(c)

5.0\times10^{1}\,\text{J}

(d)

2.5\times10^{1}\,\text{J}