# physics problem

• September 18th 2008, 05:26 PM
Morgan82
physics problem
Vf = Vi + A(t)

8.0 km/h = 24.0 km/h - (0.20 m/(s^2)) t

Do you have to convert the units so they are all the same?
Could someone just solve this so I get it? please
• September 18th 2008, 05:30 PM
skeeter
all units must "fit".

change km/hr to m/s ...

$\frac{km}{hr} \cdot \frac{1000 \, m}{1 \, km} \cdot \frac{1 \, hr}{3600 \, s} = \frac{m}{s}$