## College Physics (4th Edition)

(a) $180~mi/h$ (b) $8.0~cm/ms$
(a) We can convert the speed to units of mi/h: $80~m/s \times \frac{1~mi}{1609~m} \times \frac{3600~s}{1~h} = 180~mi/h$ (b) We can convert the speed to units of cm/ms: $80~m/s \times \frac{100~cm}{1~m} \times \frac{1~s}{1000~ms} = 8.0~cm/ms$