A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. The cliff is h = 38.0 m above a flat horizontal beach, as shown in the figure below. How long after being released does the stone strike the beach below the cliff? With what speed and angle of impact does the stone land? m/s ° below the horizontal

In the Marvel comic series X-Men, Colossus would sometimes throw Wolverine toward an enemy in what was called a fastball special. Suppose Colossus throws Wolverine at an angle of 0 = 23.0° with respect to the ground (see figure below). Wolverine is d = 2.14 m above the ground when he is released, and he leaves Colossus's hands with a speed of v; = 22.6 m/s. d (a) Using conservation of energy and the components of the initial velocity, find the maximum height attained by Wolverine during the flight. m (b) Using conservation of energy, what is Wolverine's speed the instant before he hits the ground? m/s

Ch.4 Problem 95

On planet #3, you fire a projectile horizontally from the edge of a vertical cliff 21.5 m above the ground, with an initial speed of 40.1 m/s. The projectile lands 36.9 m away from the base of the cliff. What is the value of g for planet #3?     21.22 m/s^2     50.78 m/s^2     25.39 m/s^2     128.36 m/s^2