A bridge in Colorado rises 343 m above a river. Suppose you kick a rock horizontally off the bridge. The magnitude of the rock’s horizontal displacement is 55.0 m. Find the speed at which the rock was kicked.

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.