Chapter 11, Problem 11.193RP

A telemetry system is used to quantify kinematic values of a ski jumper immediately before she leaves the ramp. According to the system r = 500 ft, $\stackrel{\dot{}}{r}=-105\text{ft/s}$, $\ddot{r}=-10{\text{ft/s}}^2$, θ = 25°, $\stackrel{\dot{}}{\theta }\text{=}0.07\text{rad/s}$, and $\ddot{\theta }=0.06{\text{rad/s}}^{\text{2}}$. Determine (a) the velocity of the skier immediately before she leaves the jump, (b) the acceleration of the skier at this instant, (c) the distance of the jump d neglecting lift and air resistance.

Fig. P11.193