A cyclist going downhill is accelerating at 1.2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is the cyclist’s initial velocity?
Change in velocity (\(\Delta v\)) is acceleration (\(a\)) times time (\(t\))
Acceleration \(a=1.2\ m/s^{2}\)
Time \(t=10\ s\)
So \(\Delta v=at=1.2\ m/s^{2}*10\ s=12\ m/s\)
The initial velocity is then \(16\ m/s-12\ m/s=4\ m/s\)