Chapter 4, Problem 27QAP

A telemetry system is used to quantify kinematic values of a ski jumper immediately before the jumper leaves the ramp. According to the system  r=560 ft  ,   r˙=−105 ft/s  ,   r¨=−10 ft/s2  ,   θ=25°  ,   θ˙=0.07 rad/s  ,    θ¨=0.06 rad/s2 Determine the velocity of the skier immediately before leaving the jump. The velocity of the skier immediately before leaving the jump along with its direction is ? I have 112.08 ft/s but can't seem to get the direction correct. Determine the acceleration of the skier at this instant. At this instant, the acceleration of the skier along with its direction is ? acceleration is 22.8 ft/s^2 but need help with direction. Need help with velocity direction and acceleration direction please.

Answer 4.4 pleas

By using the yield line theory, determine the moment (m) for an isotropic reinforced concrete two-way slab (supports on two S.S sides shown in figure under the load (P) (all dimensions are in mm). Solve by equilibrium method m m 2000 2000 3000