Problem 2: A car moves along a horizontal road with constant velocity
v⃗0==v0,xî(31.6m/s)î
until it encounters a smooth inclined hill. It climbs the hill with constant velocity
v⃗1==v1,xî+v1,yĵ(40.2m/s)î+(5.38m/s)ĵ
as indicated in the figure. The period of time during which the car changes its velocity is Δt=1.99s.