A ball player hits a home run, and the baseball just clears a wall 21.0 m high located 150.0 m from home plate. The ball is hit at an angle of 34.0° to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1.0 m above the ground and that upward is positive. (a) What is the initial speed of the ball?

(b) How much time does it take for the ball to reach the wall?

(c) Find the velocity components of the ball when it reaches the wall.
m/s (x-component)
m/s (y-component)

Find the speed of the ball when it reaches the wall.

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted