Question

A student stands at the edge of a cliff and throws a stone horizontally over the edge with V-18.5 m/s. The cliff is h = 48.3 m above a body of water as shown in the figure below. (a) What are the coordinates of the initial position of the stone? (Note that the origin is at the base of the cliff, where the x- and y-axes intersect.) X;= (b) What are the components of the initial velocity of the stone? m/s m/s (c) What is the appropriate analysis model for the vertical motion of the stone? particle under constant speed particle under constant, nonzero acceleration (d) What is the appropriate analysis model for the horizontal motion of the stone? particle under constant speed particle under constant, nonzero acceleration (e) Write symbolic equations for the x and y components of the velocity of the stone as a function of time. (Use the following as necessary: V 9, and t. Indicate the direction of the velocity with the sign of your answer.)

Answer 1

a] xi = 0 m

yi = 48.3 m

b] vix = 18.5 m/s

viy = 0

c] particle under constant non zero acceleration = g

d] particle under constant speed as there is no horizontal force.

e] Vfx = vix

Vfy = -gt